Evaluate the expression.(g ? f)(c) when f(x) = -3x + 2 and g(x) = 6x + 2.
A. 18c + 14
B. -18c - 10
C. -18c + 8
D. -18c + 14
Answer: D
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Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(-6 - 8i)(-6 + 8i)
A. 100 B. 36 + 64i2 C. -28 D. 36 - 64i2
Write the expression as the sum or difference of logarithms.logb 
A. 
logb x + 8 - 2logb y
B. 
logb x + 2 - 2logb y
C. 
logb x + 2 - 
logb y
D. 
(logb x9 + logb b8 - logb y2)
Solve the system of equations using Cramer's Rule, if applicable.
A. (2, 1)
B. {(x,y) 
C. ?
D. (1, 2)
Apply row operations to the augmented matrix to find the solution to the linear system.
A. x = -2k + 2, y = -5k - 9, z = k, for any real number k. B. x = -2k + 1, y = -5k - 10, z = k, for any real number k. C. x = 3k + 11, y = k - 13, z = k, for any real number k. D. x = 1, y = 11, z = 1