Solve.The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 75 feet and 
walls requires 
of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 60 feet and 6-foot walls.
A. 7.2 quarts
B. 36 quarts
C. 360 quarts
D. 3.6 quarts
Answer: D
Mathematics
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Simplify the expression. Assume all variables represent positive real numbers.
+ 
A. 7
B. 21
C. 
D. 10.5
Mathematics
One zero is given. Find all others.P(x) = x3 - 3x2 - 36x + 108; -6
A. 3 B. 36, 3, 108 C. 3, 6 D. -3, 3, 6
Mathematics
Perform the indicated operation. Round the result to the nearest thousandth if necessary.-48.46 - 3.21
A. -45.25 B. -50.67 C. 45.25 D. -51.67
Mathematics
Write the expression in interval notation. Graph the interval.x < -9
A. [-?, -9)
B. (-?, -9)
C. (-9, ?)
D. (-?, -9]
Mathematics