Solve the system by graphing. If there isn't a unique solution to the system, state the reason. 5x + y = -22 5x + 6y = -7
A. (-5, -6)
B. (5, 3)
C. (-4, -2)
D. (-5, 3)
Answer: D
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Evaluate the expression for the given values of the variables, if possible.
x = -54
A. -6 B. 6 C. -5 D. -7
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
Solve the problem.Find the total area of the roof of the garage.
A. The total area of the roof of the garage is 50 square feet. B. The total area of the roof of the garage is 408 square feet. C. The total area of the roof of the garage is 272 square feet. D. The total area of the roof of the garage is 136 square feet.
Solve the problem.A whispering gallery is a room in the shape of an elliptic reflector. If a source of sound is placed at one focal point of an elliptic reflector, the sound is reflected through the other focal point. If one person speaks at one focal point, then another person at the other can hear sounds as faint as a whisper. If the whispering gallery is based on the ellipse 
+ 
= 1, how many units from the center of the ellipse would the two people stand?
A. 13 units B. 25 units C. 12 units D. 5 units