Add the integers.-10 + 23 + (-18)
A. 15
B. 31
C. -5
D. 51
Answer: C
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Solve the problem.A company wishes to manufacture a box with a volume of 24 cubic feet that is open on top and is twice as long as it is wide. Find the width of the box that can be produced using the minimum amount of material. Round to the nearest tenth, if necessary.
A. 5.2 ft B. 6.4 ft C. 3.2 ft D. 2.6 ft
Solve.If f(x) = 9x - 
, find all values of x for which f(x) = 1.
A. - 1, 
B. - 2, - 1
C. - 2, 
D. - 
, 
One bag of Alice's favorite cookies contains 421 calories. How many calories are in 4 bags of cookies?
A. 2124 cal B. 1,600 cal C. 1,680 cal D. 1,684 cal
Solve the system. Express the solution in the form (x, y, z, w). 3x - 4z + w = 17-x + y + 4z - w = -12 3x - y + 4w = -10 y + 3z - w = -8
A. {( 0, -1 , 7, 5)} B. {(-1, 7, -5, 0)} C. {(1, 9, -5, -1)} D. {(-2, 0, -6 , 1)}