Envision Algebra

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step

• They should add 19 instead of subtracting 19

• I can not find an error

• Instead of adding 3k they should subtract 3k

Tags

CCSS.HSA.REI.A.1

Solve.   n - (-2) = -14

• -16

• 16

• 12

• -12

Tags

CCSS.6.EE.B.7

If a = 4 & b = 6, what is 3a + 5b?

• 40

• 42

• 44

• 46

Tags

CCSS.6.EE.A.2C

If x=5,find the value of 7x-1

• 34

• 36

• 35

Tags

CCSS.6.EE.A.2C

If a=4,b=5 and c=6,find 2c-a-b

• 4

• 3

• 6

Tags

CCSS.6.EE.A.2C

If y=4,find the value of 3y+5

• 27

• 12

• 17

Tags

CCSS.6.EE.A.2C

What is the opposite operation of division?

• Division

• Multiplication

• Addition

• Subtraction

Tags

CCSS.3.OA.C.7

What is the simplest form of this radical?

• 
• 
• 
• Cannot be simplified

Factor this trinomial: 2x² + 11x + 12

• (x + 3)(2x + 4)

• (2x + 2)(x + 6)

• (x + 2)(2x + 6)

• (2x + 3)(x + 4)

The graph of f(x) = x² has been transformed so that the vertex is now (-2, 8), it opens upward, and is now 3 times as steep. What is the new equation?

• f(x) = (x - 2)² - 8

• f(x) = 3(x + 2)² + 8

• f(x) = -3(x + 2)² + 8

• f(x) = 3(x + 2)² - 8