Factor by grouping. Assume any variable exponents represent whole numbers.15x2 - 9x - 10x + 6
A. (3x - 2)(5x - 3)
B. (15x + 2)(x + 3)
C. (3x + 2)(5x + 3)
D. (15x - 2)(x - 3)
Answer: A
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Evaluate the following improper integral whenever it is convergent.
?
?
A. 
B. 
C. ?
D. ?
E. ?
F. the integral is divergent
Give the domain and range of the relation.{(6, -5), (3, 2), (4, 6), (-1, 3), (-4, 9)}
A. domain = {6, 3, 2, -5, 9}; range = {4, -1, 3, 6, -4} B. domain = {4, -1, 3, 6, -4}; range = {6, 3, 2, -5, 9} C. domain = {2, 6, -5, -4, 9}; range = {4, 6, -1, 3, 3} D. domain = {4, 6, -1, 3, 3}; range = {2, 6, -5, -4, 9}
Simplify the expression.(-5)3
A. -125 B. -15 C. 125 D. 15
Solve the problem.The voltage E in an electrical circuit is given by E = 4.7 cos 80?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).
A. 
B. 80
C. 
D. 40