Perform the addition or subtraction.(x3 + 6xy - 9y2) - (4x3 + 9xy + y2)
A. -3x3 - 3xy - 10y2
B. -3x3 - 3xy - 8y2
C. 5x3 - 3xy - 10y2
D. 3x3 + 3xy - 8y2
Answer: A
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Use rational equations to solve the problems.One maid can clean the house three times faster than another. Working together they can clean the entire house in 3 hours. How long would it take the faster maid cleaning alone?
A. 3 hr
B. 
hr
C. 5 hr
D. 4 hr
Solve the problem. Round unit depreciation to nearest cent when making the schedule, and round final results to the nearest cent. A construction company purchased a piece of equipment for $1710. The expected life is 7000 hours, after which it will have a salvage value of $280. Find the amount of depreciation for the first year if the piece of equipment was used for 1600 hours. Use the units-of-production method of depreciation.
A. $320.00 B. $186.67 C. $228.00 D. $390.86
Find the length of the missing side of the right triangle. Round to three decimal places, if necessary. The legs of the right triangle are represented by a and b, and the hypotenuse is represented by c.a = 10, b = 24
A. c = 25 B. c = 18 C. c = 22 D. c = 26
List the critical values of the related function. Then solve the inequality.
< 
A. -
, -4, -2, 1, 4, 
; (-
, -4) ? (-1, 1) ? (4, 
)
B. -
, 
; (-
, 
)
C. 1, 4; (-?, 1) ? (4, ?)
D. -
, -4, -2, 1, 4, 
; (-?, -
) ? (-4, -1) ? (1, 4) ? (
, ?)