Simplify the expression. Assume that all variables represent nonnegative numbers.7
+ 5
A. 12
B. -2
C. 12
D. 12
Answer: C
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Solve the problem.At time t = 0, a particle is located at the point (5, 8, 9). It travels in a straight line to the point 
has speed 10 at 
and constant acceleration 
Find an equation for the position vector r(t) of the particle at time t.
A. r(t) = 
(5i + 8j + 9k) + 4i + 3j + 12k
B. r(t) = 
(4i + 3j + 12k) + 5i + 8j + 9k
C. r(t) = 
(4i + 3j + 12k) + 5i + 8j + 9k
D. r(t) = 
(4i + 3j + 12k) + 5i + 8j + 9k
Find the median.The distances traveled (in miles) to 7 different swim meets are given below:11, 19, 40, 54, 64, 73, 84Find the median distance traveled.
A. 49 miles B. 40 miles C. 64 miles D. 54 miles
Find the x-value of all points where the function has relative extrema. Find the value(s) of any relative extrema.f(x) = xe4x
A. 
, relative maximum
B. 
, relative maximum
C. 
, relative minimum
D. 
, relative minimum
Find (f ? g)(x) and (g ? f)(x).f(x) = 
; g(x) = 2x3
A. (f ? g)(x) = 
(g ? f)(x) = 
B. (f ? g)(x) = 
(g ? f)(x) = 
C. (f ? g)(x) = 
(g ? f)(x) = 
D. (f ? g)(x) = 
(g ? f)(x) = 