Solve the problem.The percent of U.S. households that access the Internet by dial-up is shown on the graph, where the year 2000 corresponds to 
Use the ordered pairs from the graph to write an equation to predict the percent of U.S. households that will access the Internet by dial-up in 2008. Round to the nearest percent. 
A. 35%
B. 41%
C. 53%
D. 48%
Answer: B
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Find the exact value of the expression.cos-1 (-1)
A. 0
B. 2?
C. 
D. ?
For the function f, construct and simplify the difference quotient 
.f(x) = 2|x| + 9x
A. 
B. -10h
C. 
D. -8h
Solve the problem.Sybil is having her yard landscaped. She obtained an estimate from two landscaping companies. Company A gave an estimate of $180 for materials and equipment rental plus $60 per hour for labor. Company B gave an estimate of $230 for materials and equipment rental plus $50 per hour for labor. We can represent this situation with the system of linear equationsc = 180 + 60xCompany Ac = 230 + 50xCompany Bwhere c is the total cost and x is the number of hours of labor. Graph the system. What is the x-coordinate of the intersection point of the graphs? Describe what this x-coordinate means in practical terms.
A. 5; for 5 hours of labor, both companies charge the same. B. 8; for 8 hours of labor, both companies charge the same. C. 4; for 4 hours of labor, both companies charge the same. D. 4; there is a number of hours of labor, for which both companies charge $400.
Solve the problem.The charges for renting a moving van are $55 for the first 50 miles and $4 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 85 miles.
A. f(x) = 
; $595
B. f(x) = 
; $595
C. f(x) = 
; $195
D. f(x) = 
; $4815