Solve the problem.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 70 feet and 
walls requires 
of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 55 feet and 8-foot walls.
A. 440 quarts
B. 44 quarts
C. 4.4 quarts
D. 8.8 quarts
Answer: C
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For the given correspondence, write the domain and the range. Then determine whether the correspondence is a function.{(-8, -5), (-5, -10), (0, 8), (8, 3)}
A. domain: {-10, -5, 3, 8}, range: {-8, -5, 0, 8}; Yes, it is a function. B. domain: {-10, -5, 3, 8}, range: {-8, -5, 0, 8}; No, it is a not a function. C. domain: {-8, -5, 0, 8}, range: {-10, -5, 3, 8}; Yes, it is a function. D. domain: {-8, -5, 0, 8}, range: {-10, -5, 3, 8}; No, it is a not a function.
Write the fraction in lowest terms. Use the method of dividing by a common factor.
A. 
B. 
C. 
D. 
Solve the problem.The rate at which an assembly line worker's efficiency E (expressed as a percent) changes with respect to time t is given by 
where t is the number of hours since the worker's shift began. Assuming that 
find E(t).
A. E(t) = 55t - 2t2 + 141 B. E(t) = 55t - 2t2 + 35 C. E(t) = 55t - 4t2 + 35 D. E(t) = 55t - 2t2 + 88
Use the discriminant to determine if the equation can be solved by factoring. If the equation can be solved by factoring, then factor it.b2 - 7b + 6 = 0
A. Cannot be solved by factoring B. (b + 6)(b + 1) = 0 C. (b - 8)(b - 1) = 0 D. (b - 6)(b - 1) = 0