Find the least common denominator (LCD).
, 
A. t(t - 7)
B. 45
C. t
D. t - 7
Answer: A
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Solve the problem.Find the second derivative of the function y = x8ln x.
A. 56x7ln x + 15x6 B. 8x6ln x + 15x6 C. 56x6ln x + 15x6 D. 56x6ln x + 7x6
Solve the problem.The number of VHS movie rentals has declined since the year 2000 due to the popularity of DVDs, as the following table shows. The exponential regression equation was found to be 
where x represents the number of years since 2000. According to the exponential model, what is the decay rate for the number of VHS rentals?
A. 1.8209 B. -8.92 C. 0.1791 D. 0.8209
Find the GCD or LCM as indicated.Given 8 and 28, find the LCM.
A. 224 B. 28 C. 14 D. 56
For the pair of functions, find the indicated composition.f(x) = 
, g(x) = 5x + 9Find (g ? f)(x).
A. x
B. 5x + 36
C. x - 
D. x + 18