Solve the problem.An exam contains 5 multiple-choice questions, each having 4 possible answers. In how many different ways can the exam be completed?
A. 54
B. C(5, 4)
C. 45
D. 5 ? 4 ? 3 ? 2
E. none of these
Answer: C
Mathematics
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Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. ? B. 1 C. 0 D. No limit
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Find the square root correct to the thousandths place.
A. 6.250 B. 6.242 C. 39.000 D. 6.245
Mathematics
Solve.A boat moves 5 kilometers upstream in the same amount of time it moves 19 kilometers downstream. If the rate of the current is 8 kilometers per hour, find the rate of the boat in still water.
A. 13
kilometers per hour
B. 8 kilometers per hour
C. 6
kilometers per hour
D. 2
kilometers per hour
Mathematics
Identify the polynomial as a monomial, binomial, trinomial, or none of these. Also give the degree.14a7
A. Binomial; 7 B. Monomial; 14 C. None of these; 14 D. Monomial; 7
Mathematics