Set up the general equation from the given statement.The safe load on a beam ? with a rectangular cross section that is supported at each end varies jointly as the product of the width W and the square of the depth D and inversely as the length L of the beam between the supports.
A. 
B. 
C. 
D. 
Answer: D
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Find the exact value of the expression.cot-1
A. - 
B. - 
C. 
D. 
Solve the problem.The width of a rectangle is 4 inches. Let W be the width (in inches), L be the length (in inches), and A be the area (in square inches).a. Sketch three possible rectangles of width 4 inches.b. Which of the symbols W, L, and A are variables?c. Which of the symbols W, L, and A are constants?
What will be an ideal response?
The oxygen consumption of a bird embryo increases from the time the egg is laid through the time the chick hatches. In a typical galliform bird, the oxygen consumption (in milliliters per hour) can be approximated by
?
?
where t is the time (in days) since the egg was laid. (An egg will typically hatch at around 
.)
?
Find 
. Round your answer to two decimal places.
?
A. 
B. 
C. 
D. 
E. 
Solve the problem.Ten students in a graduate program were randomly selected. Their grade point averages (GPAs) when they entered the program were between 3.5 and 4.0. The following data were obtained regarding their GPAs on entering the program versus their current GPAs. The following regression equation is obtained: 
where x is entering GPA and y is current GPA. Predict current GPA of a student whose entering GPA is 3.1. Round your answer to two decimal places.Entering GPACurrent GPA 3.53.63.83.73.63.93.63.63.53.93.93.84.03.73.93.93.53.83.74.0
A. 3.39 B. 3.28 C. 3.57 D. 3.77