Provide an appropriate response.Is x10y7 a common factor of -x11y8 and x10y7?
A. No
B. Yes
Answer: B
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Solve the problem.After a new firm starts in business, it finds that its rate of profits (in hundreds of dollars per year) after t years of operation is given by 
Find the profit in year 8 of the operation.
A. $42,700 B. $52,150 C. $18,900 D. $60,000
Solve the problem.How many ways can a committee of 3 be selected from a club with 12 members?
A. 1320 B. 220 C. 110 D. 6
Use special right triangles to evaluate the expression.tan 30° - cos 45°
A. 
B. 
C. 
D. 
Solve the problem.The charges for renting a moving van are $60 for the first 30 miles and $7 for each additional mile. Assume that a fraction of a mile is rounded up. Find a symbolic representation for a function f that computes the cost of driving the van x miles, where 
(Hint: express f as a piecewise-constant function.) Then, determine the cost of driving the van 91 miles.
A. f(x) = 
; $487
B. f(x) = 
; $907
C. f(x) = 
; $907
D. f(x) = 
; $5887