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)
What is the body's speed when t = 2 sec?
A. 2 ft/sec
B. 3 ft/sec
C. 0 ft/sec
D. -2 ft/sec
Answer: A
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Solve the problem.A nuclear scientist has a sample of 
of a radioactive material which has a half-life in hours. She monitors the amount of radioactive material over a period of a day and obtains the following data. Use a graphing utility to fit an exponential function to the data. Predict the amount of material remaining at 40 hours.
.
A. y = 86e-0.071x, 5.0 mg B. y = 100e-0.077x, 6.7 mg C. y = 100e-0.077x, 4.6 mg D. y = 92e-0.0686x, 5.9 mg
Use the fundamental identities to find the value of the trigonometric function.Find csc ?, given that cot ? = -
and ? is in quadrant II.
A. - 
B. -4
C. 4
D. 
Tell whether the expression is a monomial. If it is, name the variable(s) and coefficient, and give the degree of the monomial.
A. Monomial; variables x, y; coefficient 6; degree 2 B. Monomial; variables x, y; coefficient 6; degree 1 C. Monomial; variables x, y; coefficient 6; degree -2 D. Not a monomial
Simplify.
÷ 
? 
A. 
B. 
C. 
D. 