Solve.The area of a rectangular wall in a classroom is 133 square feet. Its length is 2 feet shorter than three times its width. Find the length and width of the wall of the classroom.
A. width = 7 ft; length = 19 ft
B. width = 7 ft; length = 23 ft
C. width = 7 ft; length = 9 ft
D. width = 7 ft; length = 13 ft
Answer: A
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Find the linearization of the function at the given point.
at 
A. L(x, y, z) = 
x + 
y + 
z + tan-1 343 - 
B. L(x, y, z) = 
x + 
y + 
z + tan-1 49 - 
C. L(x, y, z) = 
x + 
y + 
z + tan-1 49 - 
D. L(x, y, z) = 
x + 
y + 
z + tan-1 343 - 
Solve the initial value problem.
= e-t sec2 (?e-t ), y(-ln 10) = 
A. y = 
B. y = 
C. y = cot (?e-t ) + 7
D. y = 
Use the two steps for solving a linear programming problem to solve the problem.Wally's Warehouse sells trash compactors and microwaves. Wally has space for no more than 79 trash compactors and microwaves together. Trash compactors weigh 31 pounds and microwaves weigh 129 pounds. Wally is limited to a total of 6000 pounds for these items. The profit on a microwave is $53 and on a compactor $22. How many of each should Wally stock to maximize profit potential? Let x represent the number of trash compactors and y represent the number of microwaves.
A. 34 trash compactor(s) and 45 microwave(s) B. 0 trash compactor(s) and 45 microwave(s) C. 46 trash compactor(s) and 34 microwave(s) D. 2 trash compactor(s) and 46 microwave(s)
Evaluate the expression.-120 + (-3)0
A. 0 B. 9 C. -2 D. 1