Solve.From a 15-inch by 15-inch piece of metal, squares are cut out of the four corners so that the sides can then be folded up to make a box. Let x represent the length of the sides of the squares, in inches, that are cut out. Express the volume of the box as a function of x. Graph the function and from the graph determine the value of x, to the nearest tenth of an inch, that will yield the maximum volume.
A. 2.5 inches
B. 3.1 inches
C. 2.8 inches
D. 2.3 inches
Answer: A
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Write as a common fraction.0.0006
A. 
B. 
C. 
D. 
Solve the problem.An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 900 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost?
A. 14 P1 planes and 7 P2 planes B. 13 P1 planes and 9 P2 planes C. 5 P1 planes and 22 P2 planes D. 9 P1 planes and 13 P2 planes
Find the exact value of the expression.
A. -2
B. - 
C. -
D. - 
Translate the sentence into an equation using the variable x.A number increased by 2 is -14.
A. x = 2- 14 B. x - 14 = 2 C. 2 - x = -14 D. x + 2 = -14