Simplify the expression.
+ 7
+ 6
A. 13
B. 41
C. 41
D. 13
Answer: B
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Match the surface show below to the graph of its level curves.
A. 
B. 
C. 
D. 
Graph the pair of parametric equations with the aid of a graphing calculator.x = 4 sin t - sin 4t, y = 4 cos t - cos 4t, 0 ? t ? 2?
A. 
B. 
C. 
D. 
Solve the problem.Coyotes are one of the few species of North American animals with an expanding range. The future population of coyotes in a region of Mississippi can be modeled by the equation 
, where t is time in years. Use the equation to determine when the population will reach 140. Round to the nearest tenth when necessary.
A. 9101.9 years B. 12 years C. 11.7 years D. 11.8 years
Perform the division.(x4 - 81) ÷ (x + 3)
A. x3 + 3x2 + 9x + 27 B. x3 + 3x2 - 9x + 27 C. x3 - 3x2 + 9x - 27 D. x2 + 3x + 9