Simplify the expression, leaving your answer with only positive exponents. Assume that all variables represent positive numbers.
A. x9/8
B. x1/2
C. 
D. x
Answer: B
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A mail truck must deliver packages to 5 different homes (A, B, C, D, and E). The trip must start and end at A. The graph below shows the distances (in miles) between locations. We want to minimize the total distance traveled.
How many different Hamilton circuits would we have to check if we use the brute-force algorithm? (Do not count the same circuit traveled backward.)
A. 60 B. 4 C. 12 D. 30 E. none of these
Factor completely. If the polynomial is prime, state so.729p3 + q3
A. (9p + q)(81p2 - 9pq + q2) B. (9p + q)(81p2 - 9pq - q2) C. (9p + q)(81p2 + q2) D. (9p + q)(81p2 + 9pq + q2)
Translate using numbers and symbols.The difference of seventeen and x
A. x - 17 B. 17 ÷ x C. 18 - x D. 17 - x
Solve.In a chemical reaction, substance A decomposes at a rate proportional to the amount of A present. It is found that 14 g of A will reduce to 7 g in 4.8 hours. After how long will there be only 1 g left?
A. 13.8 hours B. 18.3 hours C. 24.8 hours D. 13.5 hours