Quiz about High School Algebra

Question 1

2x + 3(5x - 7) = 47

Accepted Answer

4

Answer

1

Answer

2

Answer

3

Question 2

8v - 4(v + 8) = 8

Accepted Answer

10

Answer

2

Answer

4

Answer

-4

Question 3

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

Accepted Answer

The student did not multiply all terms by the common denominator

Answer

The student found an incorrect common denominator

Answer

The student did not use opposite operations appropriately

Answer

The student did not correctly eliminate the variable from one side of the equation

Question 4

²/₃(5x + 6) = 34

Accepted Answer

9

Answer

51

Answer

45

Answer

8

Question 5

Solve for y:
8x + 4y= 16

Accepted Answer

y = -2x + 4

Answer

y = -8x + 16

Answer

y = 2x -4

Answer

y = -8x + 12

Question 6

Solve for a.

Accepted Answer

a = w/p

Answer

a = pw

Answer

a = p/w

Answer

a = w + p

Question 7

Steffen graphed two lines in order to find the solution to a given system of equations.
What is the solution?

Accepted Answer

(-3,-8)

Answer

(-8,-3)

Answer

(3,-8)

Answer

(8,3)

Question 8

Solve -2 = 4r + s for s.

Accepted Answer

s = -2 - 4r

Answer

s = -2 + 4r

Answer

s = 2 - 4r

Answer

s = 2 + 4r

Question 9

Solve for x and y
5x + 3y = 7
y = 4

Accepted Answer

(-1,4)

Answer

(4,1)

Answer

(4,-1)

Answer

(1,4)

Question 10

Solve for x and y
3x + 2y = 16
7x + y = 19

Accepted Answer

(2,5)

Answer

(-2,5)

Answer

(-2,-5)

Answer

(2,-5)

Question 11

Solve:
y = 2x -11
-3y = -6x -15

Accepted Answer

No solution (parallel lines)

Answer

(-1.5,-4)

Answer

(1.5,4)

Answer

Infinitely many solutions

Question 12

4x - 2y = 7
x + 2y = 3
What are x and y?

Accepted Answer

x = 2, y = 1/2

Answer

x = 2, y = 2

Answer

x = 1/2, y = 2

Answer

x = 2, y = -2

Question 13

Find the slope of the line.

Accepted Answer

-5/4

Answer

5/4

Answer

-4/5

Answer

4/5

Question 14

What is the slope in the picture?

Accepted Answer

Negative

Answer

Positive

Answer

Zero

Answer

Undefined

Question 15

Determine the slope.

Accepted Answer

m=-3/2

Answer

m=3/2

Answer

m=6

Answer

m=1/6

Question 16

Find the slope of the line that passes through
(-2, 8) and (0, 8)

Accepted Answer

0

Answer

-2

Answer

2

Answer

1/2

Question 17

Is the graph linear, exponential or neither?

Accepted Answer

Linear

Answer

Exponential

Answer

Neither

Question 18

Is the equation linear, exponential or neither?

Accepted Answer

Exponential

Answer

Linear

Answer

Neither

Question 19

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

Accepted Answer

y = 15(1.35)^x

Answer

y = 15(35)^x

Answer

y = 15(0.35)^x

Answer

y = 35(1.15)^x

Question 20

You put your money into a savings account that earns 8% interest compounded annually. If you originally invested $1,240, how much is in your account after 2 years?

Accepted Answer

$1,446.34

Answer

$1,438.40

Answer

$1297.94

Answer

$4017.60

Question 21

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

Accepted Answer

y=5000(0.7)^x

Answer

y=30(5000)^x

Answer

y=5000(1.3)^x

Answer

y=5000x<sup>x</sup>

Question 22

What is the balance of $6000 compounded annually at a rate of 4% for 10 years?

Accepted Answer

$8,881.47

Answer

$7,432.93

Answer

$8,400

Answer

$6,500

Question 23

Factor
x²+ 9x - 36

Accepted Answer

(x + 12)(x - 3)

Answer

(x + 9)(x - 4)

Answer

(x - 12)(x + 3)

Answer

(x - 9)(x - 4)

Question 24

The area of a rectangle is (x² + 17x+42) ft². If its width is (x + 3) ft. What is its length?

Accepted Answer

(x + 14) ft

Answer

(x + 17) ft

Answer

(x - 14) ft

Answer

(x - 17) ft

Question 25

Solve
a² + 2a - 24 = 0

Accepted Answer

a = -6, 4

Answer

a = 6, -4

Answer

a = 12, -2

Answer

a = 8, -3

Question 26

Solve
2x² + 17x + 21 = 0

Accepted Answer

x=-7, ^-3/₂

Answer

x= ^-21/₂, -17

Answer

x= ²/₃, 16

Answer

x=15, -³/₇

Question 27

Solve
x² + 13x + 12 = 0

Accepted Answer

x = -12, -1

Answer

x = 12, 1

Answer

x = 13, 1

Answer

x = -13, -1

Question 28

Identify the 'c' value: y = 16x² -8x -24

Accepted Answer

-24

Answer

16

Answer

-8

Answer

24

Question 29

b² would equal: y = 2x² -x -3

Accepted Answer

1

Answer

2

Answer

-1

Answer

-3

Question 30

What are the x- intercepts?

Accepted Answer

x= 0 and x= 4

Answer

x= 0 and x= -4

Answer

y= 0

Answer

x= 2

Question 31

When graphing b < 6 would you use an open or closed circle?

Accepted Answer

Open

Answer

Closed

Question 32

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below:
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

Accepted Answer

9

Answer

5

Answer

6

Answer

11

Question 33

The heights of some students are given.
158cm 172cm 164cm
164cm 167cm 159cm
What is the range of the heights?

Accepted Answer

14cm

Answer

13cm

Answer

164cm

Answer

330cm

Question 34

Find the Interquartile range of the data.
22, 76, 38, 24, 42, 56, 48, 34, 68

Accepted Answer

15.5

Answer

30

Answer

14

Answer

15

Question 35

What is the interquartile range (IQR)?

Accepted Answer

4

Answer

64

Answer

60

Answer

8

Question 36

Another name for Quartile 1 is

Accepted Answer

Median of the Lower Half

Answer

Median of the Upper Half

Answer

Median

Answer

Minimum

Question 37

Another name for Quartile 3 is

Accepted Answer

Median of Upper Half

Answer

Median of Lower Half

Answer

Maximum

Answer

Median

Question 38

Determine the mean absolute deviation of the data.
9, 7, 11, 10, 8

Accepted Answer

1.2

Answer

9

Answer

6

Answer

5

Question 39

-2(x+2) < 14

Accepted Answer

x > -9

Answer

x < - 5

Answer

x > -5

Answer

x < -9

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