Multiply.19 ? 8 ? 4
A. 31
B. 228
C. 156
D. 608
Answer: D
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Use the vertical line test to determine if the graph is a function.
A. Yes B. No
Find the indicated probability. A bag contains 8 red marbles, 4 blue marbles, and 1 green marble. What is the probability of choosing a marble that is not blue?
A. 9
B. 
C. 
D. 
Solve the problem.A piece of molding 
long is to be cut to form a rectangular picture frame. What dimensions will enclose the largest area? Round to the nearest hundredth if necessary.
A. 13.75 cm x 13.75 cm B. 37.8 cm x 37.8 cm C. 13.75 cm x 47.25 cm D. 47.25 cm x 47.25 cm
Solve the problem.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: 
What rainfall produces the maximum number of mosquitoes?
A. 4 in. B. 16 in. C. 2 in. D. 0 in.