Solve the problem.The area of a circle varies directly as the square of the radius of the circle. If a circle with a radius of 
has an area of 78.5 square inches, what is the area of a circle with a radius of 8 inches?
A. 203.36 in.2
B. 200.96 in.2
C. 50.24 in.2
D. 25.12 in.2
Answer: B
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What is the 16's complement of 4E6?
a. C1b b. B19 c. FE6 d. 2BB e. B1A
Solve the problem.Car A (travelling north at 30 mph) and car B (traveling west at 20 mph) are heading toward the same intersection. Car A is 6 miles from the intersection when car B is 8 miles from the intersection. Find parametric equations that describe the motion of cars A and B. 
A. Car A: x = 0, y = 30t - 6; Car B: x = 8 - 20t, y = 0 B. Car A: x = 0, y = 20t - 8; Car B: x = 30t - 6, y = 0 C. Car A: x = -30t + 6, y = 0; Car B: x = 8 - 20t, y = 0 D. Car A: x = 20t - 8, y = 0; Car B: x = 0, y = 6 - 30t
Solve.The table shows the monthly revenue (in millions) for a software company for the first nine months of a recent year.
Find the mode of the monthly revenues.
A. $19.2 million B. $19.5 million C. $18.9 million D. $19.6 million
For 
, 
. If 
, 
, and 
, find BC.
A. 2
B. 3
C. 6
D. 7.5