Solve the problem.The area of a rectangular piece of cardboard shown is 560 square inches. The cardboard is used to make an open box by cutting a 3-inch square from each corner and turning up the sides. If the box is to have a volume of 870 cubic inches, find the dimensions of the cardboard that must be used.
A. 19 in. by 38 in.
B. 16 in. by 35 in.
C. 10 in. by 26 in.
D. 13 in. by 32 in.
Answer: B
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For the functions f and g, find the requested value.Evaluate (f ? g)(-2).y = f(x)y = g(x)
?
A. 1 B. -1 C. -0.5 D. 2
Solve the problem.A cab company charges a base rate of $1.50 plus 15 cents per minute. Let y be the cost in dollars of using the cab for x minutes. Find the slope-intercept form of the equation.
A. y = 1.50x - 0.15 B. y = 0.15x + 1.50 C. y = 1.50x + 0.15 D. y = 0.15x - 1.50
Find the value of the expression.Let logb 2 = 2.218 and logb 3 = 3.414. Find logb 3b.
A. 2.218 B. 4.414 C. 3.218 D. 3.414
Find the perimeter.The city plans to frame the local playground with redwood lumber. How many feet of lumber will the city need?
A. 32,400 ft B. 900 ft C. 1080 ft D. 915 ft