For the given pair of functions, find the requested function.If f(x) = x2 + 8x + 7 and g(x) = 3x - 1, find (fg)(3).
A. -94
B. 320
C. 81
D. 311
Answer: B
Mathematics
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The function f is one-to-one. Find its inverse.f(x) = 2x2 - 9, x ? 0
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = - 
D. f-1(x) = 
Mathematics
Use Gaussian elimination to solve the system of equations. 6x + 8y = 24-3x - 2y = -12
A. (4, 1) B. (3, 1) C. No solution D. (4, 0)
Mathematics
Solve.On a map, 1 in. represents 120 miles. How much does 
in. represent?
A. 72 mi B. 62 mi C. 200 mi D. 82 mi
Mathematics
Find dy/dx by implicit differentiation.x ln y + y = x3y3
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics