Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
Answer: A
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Identify a technique of integration for evaluating the integral. If necessary, explain how to first simplify the integrand before applying the suggested technique of integration. You do not need to evaluate the integral.
A. Integrate by parts with u = 1-cot x, dv = csc2x dx B. Integrate by parts with u = csc2x, dv = (1 - cot x) dx C. Substitute, letting u = 1-cot x D. Substitute, letting u = csc2x
Provide an appropriate response.Let A = 
. Find A2.
Fill in the blank(s) with the appropriate word(s).
Find all solutions in radians using exact values only.
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A. 
or 
B. 
or 
C. 
D. 
or 
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Find the product.(6y + 11)(5y2 - 2y - 10)
A. 30y3 + 43y2 - 82y - 110 B. 30y3 - 12y2 - 60y + 11 C. 30y3 + 67y2 + 82y + 110 D. 85y2 - 34y - 170