Solve the equation.
= 
A. {-43}
B. {7}
C. {-2}
D. {43}
Answer: D
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Solve the problem.Ellen wishes to mix candy worth $1.80 per pound with candy worth $2.40 per pound to form 48 pounds of a mixture worth $2.00 per pound. How many pounds of the more expensive candy should she use?
A. 16 pounds B. 22 pounds C. 32 pounds D. 28 pounds
Solve the equation.
(r + 6) = 
(r + 8)
A. 1 B. 2 C. -2 D. -1
Write a slope-intercept equation for a line with the given characteristics.m = -9, passes through (-5, 3)
A. y = 9x - 40 B. 9x +y = 42 C. y = -9x + 49 D. y = -9x - 42
Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 4 cos ?
A. 
x2 + (y + 2)2 = 4; circle, radius 2,
center at (0, -2) in rectangular coordinates
B. 
(x - 2)2 + y2 = 4; circle, radius 2,
center at (2, 0) in rectangular coordinates
C. 
(x + 2)2 + y2 = 4; circle, radius 2,
center at (-2, 0) in rectangular coordinates
D. 
x2 + (y - 2)2 = 4; circle, radius 2,
center at (0, 2) in rectangular coordinates