Multiply. Do not simplify.
? 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 7x2 + 6, x ? 0
A. f-1(x) = 
B. f-1(x) = 
C. not one-to-one
D. f-1(x) = 
Mathematics
Solve the problem.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round your answer to two decimal places. 
A. 7.02 B. 7.62 C. 7.84 D. 7.41
Mathematics
Tell whether the given rational expression is proper or improper.
A. Improper B. Proper
Mathematics
Evaluate dw.w = 4x5
ln (2z);x = 9, y = 5, z = 9,dx = -0.03, dy = -0.01, dz = -0.01
A. -5591.49 B. -68,867.18 C. -71,353.43 D. -72,906.05
Mathematics