Mod 7 Review

Laura uses the expression 0.40a, where a is the original attendance at a play, to find the reduced attendance at the next performance. Which is an equivalent expression?

• $0.60a$

• $a-0.60a$

• $1.60a$

• $0.40\left(a-1\right)$

Tags

CCSS.6.EE.A.4

The width of a rectangle is 4 times its length, l. Which equations represent the perimeter, P, of the rectangle?

• $P=10l$

• $P=5l$

• $P=2\left(4l\right)+2\left(l\right)$

• $P=6l+2l$

• $P=2\left(4l+l\right)$

Tags

CCSS.8.EE.C.7B

Which expression is equivalent to  $2\left(-12x-3\right)+\left(4x-\frac{1}{3}\right)$  ?

•  $-36x+1$  

•  $-24x-\frac{2}{3}$  

•  $-20x-6\frac{1}{3}$  

•  $-30x+3\frac{2}{3}$  

Tags

CCSS.6.EE.A.4

What is the value of x in the equation  $8x-3\left(4x+8\right)=216$  

• -60

• -9.6

• 1.4

• 48

Tags

CCSS.8.EE.C.7B

Craig sold 8 fewer than  $\frac{3}{4}$  as many cars as Tim sold.  Craig sold 28 cars.  Which equation can be used to find the number of cars, c, that Tim sold?

•  $\frac{3}{4}c-8=28$  

•  $\frac{3}{4}-8c=28$  

•  $\frac{3}{4}c-8c=28$  

•  $-\frac{3}{4}c+8=28$  

Tags

CCSS.HSA.CED.A.3

Solve the equation $-0.25a-5=-0.5$  

• 18

• 4.5

• -4.5

• -18

Tags

CCSS.7.EE.B.4A

The cook at Sam's Diner made 19 quiches today. This is 1 more than 3 times the number of quiches he made yesterday. How many quiches did he make yesterday?

• 7

• 6

• 18

• 17

Tags

CCSS.3.OA.D.8

Javier buys four dozen eggs. He saves $1.50 by using a coupon. The total he pays is $8.50. What was the cost of a dozen eggs without the coupon?

• $8.50

• $2.50

• $10.00

• $2.00

Tags

CCSS.7.EE.B.3

Genevieve is 3 years older than twice her brother’s age. Genevieve is 21 years old. Write an equation to find her brother’s age.

• 15

• 24

• 6

• 18

Tags

CCSS.7.EE.B.4A

How would I simplify this expression?  $5x+2+5x+2+5x+2+5x+2+5x+2+5x+2$  

•  $20x+8$  

•  $25x+10$  

•  $30x+12$  

•  $35x+14$  

Tags

CCSS.7.EE.A.1