The graph of a function is sketched as follows:
?
?
Determine the interval on which the function is decreasing.
What will be an ideal response?
Mathematics
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Determine whether the first literal expression is equal to the second literal expression.a + b, b - (-a)
A. Yes B. No
Mathematics
Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = cos-1
A. ?
B. 1
C. 
D. No limit
Mathematics
Provide an appropriate response.Exactly how many of the following equations define y as a function of x?(a)y = 7 - x(b)y2 = 4x(c)y = 
(d)x2 = y + 4
A. none B. one C. two D. three E. all
Mathematics
Factor by grouping.15a3 + 12a2b - 25ab2 - 20b3
A. (3a2 + 5b2)(5a - 4b) B. (3a2 - 5b2)(5a + 4b) C. (15a2 - 5b2)(a + 4b) D. (3a2 - 5b)(5a + 4b)
Mathematics