The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the figure to answer the question. v (ft/sec)
When is the body moving backward?
A. 0 < t < 2, 6 < t < 7
B. 7 < t < 10
C. 4 < t < 7
D. 0 < t < 4
Answer: D
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Find the slowest growing and the fastest growing functions as 
y = 3x10y = exy = ex-4y = xex
A. Slowest: y = xex Fastest: y = ex B. Slowest: y = 3x10 Fastest: y = xex C. Slowest: y = 3x10 Fastest: y = ex and y = ex-4 grow at the same rate. D. Slowest: y = ex-4 Fastest: y = xex
Arrange in order from smallest to largest.5.13, 4.69, 4.96, 5.31
A. 5.31, 5.13, 4.96, 4.69 B. 4.96, 4.69, 5.31, 5.13 C. 4.69, 4.96, 5.13, 5.31 D. 4.69, 5.13, 4.96, 5.31
The graphs of two functions f(x) and g(x) are given.Solve f(x) ? g(x).
A. x ? -1 or x ? 2 B. x ? 0 or x ? 2 C. -1 ? x ? 1 D. -1 ? x ? 2
Solve the system of equations by finding the reduced row echelon form for the augmented matrix.w - x + 2y + z = 2x + y= 5 y - z = 3
A. No solution B. (-2, 2, 3, z) C. (-6, 1, 4, 1) D. (-2 - 4z, 2 - z, 3 + z, z)