Solve the system for x and y using Cramer's rule. Assume a and b are nonzero constants.x + ay = 
x + by = 
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.Find the moment of inertia about the x-axis of the lamina bounded by the coordinate axes and the line 
if 
.
A. Ix ? 
B. Ix ? 864
C. Ix ? 
D. Ix ? 
Evaluate the integral by making a substitution and then using a table of integrals.
dx
A. 
(x + 2) sin-1 
- 
+ C
B. 
(2x + 3) sin-1 
+ 
+ C
C. 
(x + 3) tan-1 
- 
+ C
D. 
(2x+3) sin-1 
+ 
+ C
Provide an appropriate response.A coat costs x wholesale. The price the store pays is given by the function s(x) = 1.2x where x is the wholesale price. The price the customer pays is c(x) = 2x + 50 where x is the price the store pays. Write a composite function to find the customer's price as a function of the wholesale price.
Fill in the blank(s) with the appropriate word(s).
Find the domain. Write interval notation for the answer.f(x) = 
A. (-?, -8) ? (-8, 0) ? (0, ?) B. (-?, -8) ? (0, ?) C. (-?, -8) ? (-8, 4) ? (4, ?) D. (-?, 0) ? (8, ?)