Solve the problem.The kinetic energy K of a mass is proportional to the square of its velocity v. If K = 7200 joules when 
what is K when v = 8 m/sec?
A. 3520 joules
B. 3200 joules
C. 3840 joules
D. 2560 joules
Answer: B
Mathematics
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Solve the problem.Find the center of mass of the thin semicircular region of constant density 
bounded by the 
and the curve 
.
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 0, 
= 
D. 
= 0, 
= 
Mathematics
Multiply.
A. q2 + 1
B. q2 + 
q + 1
C. 2q2 + 
q + 1
D. q2 + 
q + 1
Mathematics
The NSC (Not So Consistent) Corporation has just completed its first year of business. The following chart shows its monthly profit (or loss). 
?
In which month was the absolute value of the profit or loss greatest?
A. June B. December C. February D. January
Mathematics
Solve the logarithmic equation.log (x + 9) = 1 - log x
A. 1 B. -1, 10 C. -1 D. -10, 1
Mathematics