Solve the problem.A rain gutter is made from sheets of aluminum that are 18 inches wide by turning up the edges to form right angles. Determine the depth of the gutter that will maximize its cross-sectional area and allow the greatest amount of water to flow.
A. 4.5 inches
B. 5.5 inches
C. 5 inches
D. 4 inches
Answer: A
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Solve the problem.A carpenter is building a rectangular room with a fixed perimeter of 
What are the dimensions of the largest room that can be built? What is its area?
A. 30 ft by 90 ft; 2700 ft2 B. 60 ft by 60 ft; 3600 ft2 C. 30 ft by 30 ft; 900 ft2 D. 12 ft by 108ft; 1296 ft2
Write the standard equation for the circle.Center at 
, radius 
A. 
2 + 
2 = 
B. 
2 + 
2 = 
C. 
2 + 
2 = 
D. 
2 + 
2 = 
State whether the given function is linear and constant, linear but not constant, or nonlinear.f(x) = 4
A. linear, constant B. none of these C. nonlinear D. linear, but not constant
Solve the problem.Last year, 340 million music CDs were purchased by 112 million households in the United States. On average, how many CDs were purchased in each household?
A. 170 CDs B. 340 CDs C. 3.4 CDs D. 3 CDs