Evaluate the integral using the given substitution.
, u = 6 - s4
A. 
+ C
B. -12
+ C
C. 
D. -12s3
+ C
Answer: B
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Factor, if possible.(q - 8)2 - 81
A. (q + 17)(q - 17) B. (q + 1)(q - 17) C. ((q - 8)2 + 9)((q - 8)2 - 9) D. (q + 1)2
Solve.Mark the electrician charges 
for a house call, and then 
per hour for labor. Sara the electrician charges 
for a house call, and then 
per hour for labor. Write a cost equation for each electrician, where y is the total cost of the electrical work and x is the number of hours of labor.
A. Mark: y = 25x + 115 Sara: y = 30x + 80 B. Mark: y = 115x + 25 Sara: y = 80x + 30 C. Mark: y = 80x + 30 Sara: y = 115x + 25 D. Mark: y = 30x + 80 Sara: y = 25x + 115
Write the decimal as a fraction or mixed number in lowest terms.0.5
A. 
B. 
C. 
D. 
Determine the accuracy of the measurement; that is, give the number of significant digits for the measurement.
Fill in the blank(s) with the appropriate word(s).