Decide whether or not the given equation is an identity.
= cot y(1 - sin y)
A. Yes
B. No
Answer: B
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Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 2 B. 1 C. 0 D. No limit
Provide an appropriate response.Solve for x: ax + 3 = b(x +2)
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Find a matrix A and a column matrix B that describe the following tables involving credits and tuition costs. Find the matrix product AB and interpret the significance of the entries of this product.
A.
AB = 
The total tuition paid by all 3 students is $3838.
B.
AB = 
The total tuition paid by all 3 students is $3687.
C.
AB = 
Tuition for Student 1 is $1295, tuition for Student 2 is $1229, and tuition for Student 3 is $954.
D.
AB = 
Tuition for Student 1 is $1302, tuition for Student 2 is $1227, and tuition for Student 3 is $968.
Find the inverse, if it exists, for the matrix.
A. 
B. 
C. 
D. No inverse