Simplify the expression using the properties of exponents.(x4)5
A. 5x4
B. x20
C. x9
D. x5
Answer: B
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During a flu epidemic, the number of children in the Woodbridge Community School System who contracted influenza after t days was given by 
.
?
How many children were stricken by the flu after the first day? How many children had the flu after 10 days? How many children eventually contracted the disease?
?
A. 12 children were stricken by the flu after the first day; 1,451 children had the flu after 10 days; 1,400 children eventually contracted the disease B. 15 children were stricken by the flu after the first day; 1,451 children had the flu after 10 days; 1,083 children eventually contracted the disease C. 17 children were stricken by the flu after the first day; 1,312 children had the flu after 10 days; 1,246 children eventually contracted the disease D. 15 children were stricken by the flu after the first day; 1,312 children had the flu after 10 days; 1,400 children eventually contracted the disease
Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Find an equation for the graph.
A. y = 4 cos 
B. y = -4 cos (2x)
C. y = 4 cos (2x)
D. y = 4 sin (2x)
Write < or > between the pair of numbers to make the statement true.10 ? 0
A. < B. >