Solve the problem.Let f(x) compute the cost of a rental car after x days of use 
per day. What does 
compute?
A. The number of days rented for 38 dollars
B. The cost of rental for 38 days
C. The number of days rented for x dollars
D. The cost of rental for x days
Answer: C
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The regression line always gives an exact model for data.
Answer the following statement true (T) or false (F)
Find all the second order partial derivatives of the given function.f(x, y) = cos (xy2)
A. 
= - y2 sin xy2; 
= 2y
; 
= 
= 2
B. 
= - y2 sin xy2; 
= 2[ sin (xy2)- 2y2 cos (xy2)] ; 
= 
= 2y [sin (xy2)-y2 cos (xy2)]
C. 
= -y4 cos xy2; 
= - 2x[2xy2 cos (xy2) + sin(xy2)]; 
= 
=
- 2y[xy2 cos (xy2) + sin(xy2)];
D. 
= y2 sin xy2; 
= 2[2y2 cos (xy2) - sin (xy2)] ; 
= 
= 2y[y2 cos (xy2) - sin (xy2)]
Provide an appropriate response.1.2 is what percent of 120?
A. 10,000% B. 0.01% C. 1% D. 100%
Use the laws of logarithms to simplify the expression.
?
What will be an ideal response?