Solve the problem.A bookcase is to be constructed as shown in the figure below. The height of the bookcase is 2 feet longer than the length of a shelf. If 22 feet of lumber is available for the entire unit (including the shelves, but NOT the back of the bookcase), find the length and height of the unit.
A. length = 4.5 ft; height = 6.5 ft
B. length = 3 ft; height = 5 ft
C. length = 3 ft; height = 6 ft
D. length = 10.0 ft; height = 13.5 ft
Answer: B
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First, round the mixed numbers to the nearest whole number and estimate the answer. Then find the exact answer and write it in simplest form.4
÷ 3
A. 2
B. 1
C. 1
D. 1
Factor completely. If the polynomial cannot be factored, say it is prime.5x2 - 5x - 30
A. 5(x + 2)(x - 3) B. (5x + 10)(x - 3) C. prime D. 5(x - 2)(x + 3)
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.30 ÷ 1
A. 16
B. 17
C. 19
D. 18
For the function f, construct and simplify the difference quotient 
.f(x) = 6 - 10x3
A. -10(3x2 + 3xh + h2) B. -10(3x2 - 3x - h) C. -10(x2 - xh - h2) D. -18x2