Factor the trinomial completely.15a2 + 8ab - 16b2
A. (15a + b)(a - 16b)
B. (3a - 4b)(5a + 4b)
C. (15a + 4b)(a - 4b)
D. (3a + 4b)(5a - 4b)
Answer: D
Mathematics
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Reverse the order of integration and then evaluate the integral.
A. cos 4 B. 1 + cos 4 C. 1 - cos 4 D. - cos 4
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The function graphed is of the form y = a sin bx or y = a cos bx, where b > 0. Determine the equation of the graph.
A. y = 2 cos 
B. y = 5 sin 
C. y = 5 sin (2x)
D. y = 5 cos (2x)
Mathematics
Solve the problem.One of Sal's customers ordered items costing 
and 
If Sal's commission on each item is 
what is his total commission on this sale? Round your answer to the nearest cent.
A. $11.98 B. $16.60 C. $13.57 D. $19.09
Mathematics
Multiply.
A. - 
x12
B. - 
x7
C. 
x7
D. - 
x12
Mathematics