Perform the indicated operation.Subtract (-6x2 - 3x + 1) from (-x2 - 5x + 7).
A. 5x2 + 2x + 6
B. -7x2 - 8x + 8
C. 7x2 - 2x + 8
D. 5x2 - 2x + 6
Answer: D
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Solve the problem.A plumber charges a fixed rate plus an hourly rate to do house calls. Total charges are $77 for a job taking 
and total charges are $175 for a job taking 10 hours.(i) Write a linear equation giving the total charges, y, in terms of the number of hours x.(ii) Use the equation found in part a to find how much it costs for 6 hours.(iii) How many hours would result in a total charge of $119?
A. (i) y = 14x + 35 (ii) $119 (iii) 6 hours B. (i) y = 14x + 35 (ii) $119 (iii) 8 hours C. (i) y = 14x + 35 (ii) $84 (iii) 6 hours D. (i) y = 14x (ii) $84 (iii) 6 hours
Write the decimal as a fraction or mixed number in lowest terms.0.02
A. 
B. 
C. 
D. 
Estimate the product by first rounding each number so that there is one nonzero digit.0.032 × 449.6
A. 12 B. 1200 C. 1.2 D. 120
If the following defines a one-to-one function, find its inverse. If not, write "Not one-to-one."{(6, -7), (11, -6), (9, -5), (7, -4)}
A. {(-7, 6), (-6, 11), (-5, 9), (-4, 7)} B. {(7, 6), (6, 11), (-5, 9), (-4, 7)} C. Not one-to-one D. {(6, -7), (11, -6), (9, -5), (7, -4)}