8th grade test 15

Three out of four doctors surveyed recommended the product. Eighty doctors surveyed did not recommend the product, How many doctors were surveyed?

• 60 doctors

• 120 doctors

• 200 doctors

• 20 doctors

A used-car sales person purchased a car for $5000 and sold it for 40% more. What was the selling price of the car?

• $7,000

• $1,000

• $4,000

• $6,000

Four minutes is what percent of an hour?

• $6\ \frac{2}{3}\%$

• 4%

• 10%

• 9%

Factor:

 $3x^2+6x$  

•  $3\left(x^2+2x\right)$  

• x(3x+6)

•  $3x^2\left(1+2\right)$  

• 3x(x+2)

During the season a basketball player made 25 out of 40 free throws. What is the probability that the player will make her next free throw?

• $\frac{3}{8}$

• $\frac{3}{4}$

• $\frac{5}{8}$

• $\frac{1}{2}$

Find the area of parallelogram ABCD.

• $110\ in.^2$

• $100\ in.^2$

• $140\ in.^2$

• $154\ in.^2$

Find the are of trapezoid ABCD.

• $110\ in.^2$

• $100\ in.^2$

• $140\ in.^2$

• $154\ in.^2$

Find the area of triangle ADE.

• $40\ in.^2$

• $80\ in.\ ^2$

• $50\ in.^2$

• $25\ in.^2$

The sides of a square are increased by a scale factor of 3. The area of the larger square is what percent of the area of the smaller square?

• 150%

• 300%

• 900%

• 100%

Convert 72 square feet to square yards.

• $3yds^2$

• $24\ yds^2$

• $9\ yds^2$

• $12\ yds.^2$