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. 2.3 inches
B. 2.5 inches
C. 2.8 inches
D. 3.1 inches
Answer: B
Mathematics
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For each set described, write the set in roster form.{x|x is a counting number multiple of 2}
A. ? B. {4, 6, 8, . . .} C. {0, 2, 4, 6,. . .} D. {2, 4, 6, . . .}
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x? = x + 5y, y? = ?x ? 3y
Solve the first-order linear system.
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Decide whether the following is an expression or an equation. Simplify any expression or solve any equation.7x - (3x - 1) = 2
A. Expression; 2x + 3
B. Expression; 3x + 2
C. Equation; 
D. Equation; 
Mathematics
Solve the problem.Novelties-and-Such borrowed 
for 
and paid 
in interest. Find the rate of interest on the loan. Round to the nearest tenth.
A. 10.5% B. 10.0% C. 10.7% D. 11.0%
Mathematics