Solve the equation for y.3x + y = 15
A. y = 5 - x
B. y = 3x + 15
C. y = 15 - 3x
D. y = 
Answer: C
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Use the given transformation to evaluate the integral.
Rwhere R is the interior of the ellipsoid 
A. 
?
B. 90?
C. 45?
D. 
?
Evaluate the indicated function with the given information.Find the value of cos 
if sin ? = - 
(270° < ? < 360°).
A. 
B. 
C. 
D. 
The graph shows that the cost of the average college mathematics textbook has been rising steadily since 1990.
a. What is the y-intercept?b. What is the slope?c. What is the equation of this line, in slope-intercept form?d. Predict the cost of an average college mathematics textbook in 2016.
What will be an ideal response?
Let (m × n) denote a matrix of size m × n. Find the size of the following product, or state that the product is not defined.(2 × 1)(1 × 1)
A. 2 × 1 B. 2 × 2 C. not defined D. 1 × 2