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 50 feet and 
walls requires 
of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 70 feet and 8-foot walls.
A. 5.6 quarts
B. 560 quarts
C. 11.2 quarts
D. 56 quarts
Answer: A
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The base of a ramp sits on the ground. Its slope is 0.4 feet per foot. It extends to the top of the front steps of a building 20 horizontal feet away. ? A: How high is the ramp 1 horizontal foot toward the building from the base of the ramp? ? B: How high is the top of the steps relative to the ground?
What will be an ideal response?
Kent drives his Mazda 192 miles in the same time that Dave drives his Nissan 180 miles. If Kent averages 3 miles per hour faster than Dave, find their rates.
A. 42 mph for Dave and 45 mph for Kent B. 40 mph for Dave and 43 mph for Kent C. 55 mph for Dave and 58 mph for Kent D. 45 mph for Dave and 48 mph for Kent E. 48 mph for Dave and 42 mph for Kent
Solve the differential equation subject to the initial condition.
- xy - x = 0; y(1) = 10
A. y = - 
+ 11e-x2
B. y = -1 + 11e(x2 -1)/2
C. y = -1 + 11e-x2
D. y = - 
+ 
ex2 - 1
Find two quadratic equations having the following solutions.
a. 
b. 
c. 
d. 
e. 