Find the least common denominator for the expression.
- 4
A. 36x + 20
B. 9x + 5
C. 9x
D. 20
Answer: B
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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 55 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 qt B. 11.2 qt C. 56 qt D. 560 qt
Rewrite as a percent.1.828
A. 201.08% B. 182.8% C. 2010.8% D. 1828%
Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.30a2 + 64a + 32
A. 2(3a + 4)(5a + 4) B. 2(3a - 4)(5a - 4) C. (3a + 4)(10a + 8) D. (6a + 8)(5a + 4)
Solve.A small business owner made $40,000 the first year he owned his store and made an additional 
over the previous year in each subsequent year. Find how much he made during his fourth year of business. Find his total earnings during the first four years. (Round to the nearest cent, if necessary.)
A. $20.48; $43,476.48 B. $50,388.48; $180,244.48 C. $233,280.00; $474,880.00 D. $419,904.00; $894,784.00