Solve the problem.During the first four months of the year, Jack earned $1150, $620, $1110 and $1010. If Jack must have an average salary of at least $970 in order to earn retirement benefits, what must Jack earn in the fifth month in order to qualify for benefits?
A. at least $972
B. at most $970
C. at most $972.5
D. at least $960
Answer: D
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Find the derivative of the function.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.A heart attack victim is given a blood vessel dilator to increase the radii of the blood vessels. After receiving the dilator, the radii of the affected blood vessels increase at about 2% per minute. According to Poiseulle's law, the volume of blood flowing through a vessel and the radius of the vessel are related by the formula V = kr4 where k is a constant. What will be the percentage rate of increase in the blood flow after the dilator is given?
A. 8%/min B. 10%/min C. 12%/min D. 6%/min
Solve the inequality.x2 - 3x ? 0
A. x ? -3 or x ? 0 B. 0 ? x ? 3 C. -3 ? x ? 0 D. x ? 0 or x ? 3
Sketch a transition diagram for the given transition matrix.
A. 
| A = 0.46 | B = 0.31 | C = 0.7 |
B.
| A = 0.7 | B = 0.31 | C = 0.46 |