For the given functions f and g , find the indicated composition.f(x) = 4x2 + 2x + 7,g(x) = 2x - 8(g?f)(x)
A. 4x2 + 4x + 6
B. 8x2 + 4x + 6
C. 8x2 + 4x + 22
D. 4x2 + 2x - 1
Answer: B
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If the sequence is geometric, find the common ratio r. If the sequence is not geometric, say so.
, 
, 
, 
, 
A. 10 B. 4 C. 12 D. Not geometric
Solve the equation.-(3y - 7) - (-2y + 1) = -9
A. {-15} B. {15} C. {1} D. {3}
If Cramer's rule were used to solve this system, the value for y would be the ratio of two determinants. Find the value of the numerator determinant.
?
?
A. 134 B. 60 C. 230 D. 150 E. 30
Solve the problem.Your company uses the quadratic model y = -4.5x2 + 150x to represent the average number of new customers who will be signed on (x) weeks after the release of your new service. How many new customers can you expect to gain in week 14?
A. 168 customers B. 609 customers C. 2037 customers D. 1218 customers