Evaluate the integral by changing the order of integration in an appropriate way.
A. 
ln 2 ln cos 7
B. - 
ln 2 ln cos 7
C. 9 ln 2 ln cos 7
D. - 9 ln 2 ln cos 7
Answer: B
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Factor completely.150x2 + 420xy + 294y2
A. 6(5x - 7y)(5x + 7y) B. 6(5x + 7y)2 C. (30x + 42y)(5x + 7y) D. 6(25x2 + 70xy + 49y)
Find the square root. Assume that all variables represent positive real numbers.- 
A. not a real number B. -17 C. -144 D. 17
Describe what the given ordered pair represents.Let p be the percentage of Americans at age A who have made a charitable donation in the past year. What does the ordered pair (20, 64) represent?
A. 0.64% of Americans at age 20 made a charitable donation last year. B. 64% of Americans at age 20 made a charitable donation last year. C. 20% of Americans at age 64 made a charitable donation last year. D. 0.20% of Americans at age 64 made a charitable donation last year.
Find all complex zeros of the polynomial function, and write the polynomial in completely factored form.f(x) = x4 + 7x3 + 21x2 + 63x + 108
A. f(x) = (x - 4)(x + 3)(x - 3)(x + 3)
B. f(x) = (x + 4)(x + 3)(x - 3i)(x + 3i)
C. f(x) = (x - i
)(x + i
)(x - 3)(x +3)
D. f(x) = (x - 1)(x - 12)(x - 3i)(x + 3i)