Solve the problem.How many different license plates can be made using 2 letters followed by 5 digits selected from the digits 0 through 9, if digits may be repeated but letters may not be repeated?
A. 67,600,000
B. 541,666.667
C. 20,442,240
D. 65,000,000
Answer: D
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A worker cuts a 57 feet beam into two pieces. He wants one piece to be 3 feet shorter than three times the length of the other piece. Find the length of shorter piece.
A. 12 B. 15 C. 42 D. 18
Find the inverse of the function.f(x) = 7x2 + 7, x ? 0
A. f-1(x) = 
B. Not a one-to-one function
C. f-1(x) = 
D. f-1(x) = 
Solve the problem.The size of the beaver population at a national park increases at the rate of 
per year. If the size of the current population is 131, find how many beavers there should be in 3 years. Use 
and round to the nearest whole number.
A. 149 B. 153 C. 155 D. 151
Find the composite function for the given functions.f ? g for f(x) = 7x + 12 and g(x) = 4x - 1
A. 28x + 11 B. 28x + 19 C. 28x + 5 D. 28x + 47