Solve the equation.3(2x + 1) = 9 - 5(2x - 3)
A. 
B. - 
C. 21
D. 
Answer: A
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Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = 8x + 4y + 7; 0 ? x ? 1, 1 ? y ? 3
A. 28 B. 26 C. 36 D. 38
At one high school, the mean time for running the 100-yard dash is 
with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:At least 14.3 seconds
A. 84% B. 50% C. 13.5% D. 16%
An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest position after t seconds. Also assume that the positive direction of the motion is up.a = 16;
T = 8 seconds
A. d = -16 cos 
B. d = -8 cos 
C. d = -16 sin 
D. d = -16 cos 
Write the decimal as a fraction in simplified form.28.99
A. 28
B. 289
C. 2
D. 2899