Solve the problem.The surface area of a balloon is given by S(r) = 4?r2, where r is the radius of the balloon. If the radius is increasing with time t, as the balloon is being blown up, according to the formula 
find the surface area S as a function of the time t.
A. S(r(t)) = 
?t3
B. S(r(t)) = 
?t6
C. S(r(t)) = 
?t9
D. S(r(t)) = 
?t6
Answer: D
Mathematics
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Solve for the angle ?, where 0 ? ? ? 2?sin 2? + cos ? = 0
A. ? = 
, 
, 
, 
B. 
, 
, 
, 
C. ? = 
, 
, 
, 
D. ? = 
, 
, 
, 
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Determine whether the function is odd, even, or neither.f(x) = -6x4 + 8x - 2
A. Odd B. Neither C. Even
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Write the prime factorization for the number.684
A. 2 ? 2 ? 3 ? 3 ? 19 B. 2 ? 2 ? 2 ? 3 ? 3 ? 19 C. 3 ? 3 ? 3 ? 3 ? 19 D. 2 ? 2 ? 2 ? 2 ? 19
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Factor the polynomial completely using the trial and error method.4x2 + x - 68
A. (4x + 17)(x - 4) B. (4x - 17)(x + 4) C. (4x + 4)(x - 17) D. (4x - 4)(x + 17)
Mathematics