Solve.Erika spent 
hr on her computer visiting the history channel and the discovery channel websites. She spent 
hr at the history channel website. How many hours did she spend at the discovery channel website?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: C
Mathematics
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Find the requested composition or operation.f(x) = 8x + 8, g(x) = 3x - 2Find (fg)(x).
A. 11x2 + 8x + 6 B. 24x2 - 16 C. 24x2 + 8x - 16 D. 24x2 + 22x - 16
Mathematics
Solve the problem.The half-life of silicon-32 is 710 years. If 30 grams is present now, how much will be present in 200 years? (Round your answer to three decimal places.)
A. 24.679 B. 4.257 C. 0 D. 29.42
Mathematics
Find the indicated intercept(s) of the graph of the function.y-intercept of f(x) = 
A. (0, 10)
B. 
C. (0, 0)
D. none
Mathematics
Determine whether the two pairs of numbers are proportional.5
, 7 and 3
, 3
A. Yes B. No
Mathematics