Indicate whether the function is one-to-one.A = {(7, 10), (14, -1), (-5, -9)}
A. Yes
B. No
Answer: A
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Solve the problem.A rectangular piece of cardboard measuring 20 inches by 39 inches is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each such square. What is the maximum volume of this box? If necessary, round to 2 decimal places.
A. 1490.83 in.3 B. 1364.09 in.3 C. 631.5 in.3 D. 29,578.83 in.3
Perform the requested operation on the given function.f(x) = 
, g(x) = 8x - 2Find (fg)(x).
A. 16x - 2
B. 
+ 16x
C. 16x2 - 4
D. 8x
- 2
Solve the problem.A merchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that can be sold for $70 a pound. How many pounds of the $60 coffee should be used?
A. 100 lb B. 150 lb C. 50 lb D. 75 lb
Simplify the expression. Write the result using positive exponents only.
A. - m1/3 B. m3 C. - m3 D. m1/3