Solve the problem.A yard in the shape of a square measures 
on each side. A triangular area with a height of 
and a base of 
is dug up for a flower bed. How much yard area is left over?
A. 180 ft2
B. 380 ft2
C. 420 ft2
D. 360 ft2
Answer: B
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Use percents, percent equations, and/or percent proportions to solve the application.Students enrolled in a prealgebra class can withdraw within the first two weeks without receiving a grade. If there were 30 students registered for class on the first day and 22 remaining at the end of the second week, what was the percent decrease in students for the first two weeks? Round to the nearest tenth of a percent, if necessary.
A. 63.6% B. 26.7% C. 73.3% D. 36.4%
Estimate the value of the quantity.The velocity of a projectile fired straight into the air is given every half second. Use right endpoints to estimate the distance the projectile travelled in four seconds.
A. 459.4 m B. 439.8 m C. 879.6 m D. 918.8 m
Solve the problem.Find 48 subtracted from 83.
A. 35 B. 45 C. 131 D. 29
Solve the equation by the square root property.(7x + 4)2 = 4
A. 
B. 
C. 
D. 