For the polynomial given, answer the question.Find the leading coefficient of the polynomial -2x + 9 + 7x2.
A. -2
B. 7x2
C. 7
D. -2x
Answer: C
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Use a sketch to find the exact value of y.y = cos
A. 
B. 1
C. 
D. 0
Solve the problem.
An investment of $13,335 earns 12% interest compounded monthly for 3 years. (a) What is the future value of the investment? (b) If money can be deposited at 8% compounded quarterly, find the present value of the investment.
A. (a) $19,079.32 (b) $15,043.85 B. (a) $18,890.40 (b) $8113.76 C. (a) $20,079.32 (b) $9113.76 D. (a) $15,026.21 (b) $7495.86
Simplify the expression.9 - 2(s - 6t)
A. 9 - 2s - 12t B. 9 - 2s + 12t C. 9 + 2s + 12t D. 9 + 2s - 12t
Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x - 3y = 21-3x - 4y = 15
A. Cramer's rule does not apply since D = 0; ? B. {(2, -5)} C. {(3, -6)} D. {(-3, -5)}