Solve.The rectangle has width 7x3 feet and length 8x5 feet. Find its area as an expression in x. 
8x5 feet
A. 15x8 sq ft
B. 56x8 sq ft
C. 15x15 sq ft
D. 56x15 sq ft
Answer: B
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Provide an appropriate response.Suppose that a histogram is constructed for the frequency table shown below:
The class 60-69 has twice the frequency of the class 70-89. In the histogram, will the area of the bar for the class 60-69 be twice the area of the bar for the class 70-89? In other words, will areas be proportional to frequencies in this histogram? Explain your thinking. Are there any conditions under which areas are proportional to frequencies in histograms?
What will be an ideal response?
Solve the problem.The functionE(x) = 0.0033x3 - 0.0046x2 + 0.177x + 1.65gives the approximate total earnings of a company, in millions of dollars, where x = 0 corresponds to 1996, x = 1 corresponds to 1997, and so on. This model is valid for the years from 1996 to 2000. Determine the earnings for 1999.
A. $2.5 million B. $2.23 million C. $2.01 million D. $2.31 million
Determine whether the graph represents a function.
A. Not a function B. A function
Use formulas for perimeter and area to solve the problem.Tara has a rectangular lot that measures 78 feet by 87 feet and wishes to use fencing to enclose the garden. How much fencing does she need?
A. 660 ft B. 165 ft C. 6,786 ft D. 330 ft