Write as the sum and/or difference of logarithms. Express powers as factors. log9
A. 
log919 - 2 log9s - 2 log9r
B. log919 - log9s - log9r
C. 
log919 - 2 log9s - log9r
D. 10 log919 - 2 log9s - log910
Answer: C
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Solve the problem.A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 13 inches by 26 inches by cutting out equal squares of side x at each corner and then folding up the sides as in the figure. Express the volume V of the box as a function of x.
A. V(x) = (13 - x)(26 - x) B. V(x) = (13 - 2x)(26 - 2x) C. V(x) = x(13 - x)(26 - x) D. V(x) = x(13 - 2x)(26 - 2x)
Find the area of the shaded region.
A. 
B. 
C. 
D. 
Graph the function and its inverse using the same set of axes. Use any method.f(x) = 4log x; f-1(x) = 10x/4
A. 
B. 
C. 
D. 
Solve the problem.The average amount of money spent on laundry soap in 2006 by a family of three was $800. While the average amount of money spent by a family of four was $4000. Find the average rate of change of money spent on laundry soap with respect to family size.
A. $1.60 per person B. $320.00 per person C. $3200.00 per person D. -$3200.00 per person