Graph the ellipse and locate the foci.16x2 + 9y2 = 144 
A. foci at (5, 0) and (-5, 0)
B. foci at (0, 
) and (0, -
)
C. foci at (
, 0) and (-
, 0)
D. foci at (4, 0) and (-4, 0)
Answer: B
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Solve the problem.The length of a rectangular room is 8 feet longer than twice the width. If the room's perimeter is 160 feet, what are the room's dimensions?
A. Width = 36 ft; length = 44 ft B. Width = 24 ft; length = 56 ft C. Width = 29 ft; length = 66 ft D. Width = 48 ft; length = 112 ft
Solve the equation 
. Restrict your attention to the horizontal span of 0 to 10. Round your answer to two decimal places if necessary.
?
A. 5.37 B. 1.79 C. 2 D. 1.54
Find the equation of the line tangent or normal (as indicated) to the given curve with the given slope.y = 
x3 - 3x2 + 5, tangent line with slope -9
A. y = -9x - 4 B. y = -9x - 9 C. y = -9x D. y = -9x + 14
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 0 B. -12 C. 1 D. -4