Solve the problem.The charges for renting a moving van are $65 for the first 40 miles and $7 for each additional mile. Assume that a fraction of a mile is rounded up. a. Determine the cost of driving the van 98 miles.b. 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.)
A. a. $471; b. f(x) =
B. a. $6776; b. f(x) =
C. a. $1031; b. f(x) =
D. a. $471; b. f(x) =
Answer: A
Mathematics
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Solve the system.x2 - y2 = 39x - y = 3
A. {(-8, -5)} B. {(8, -5)} C. {(-8, 5)} D. {(8, 5)}
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Write the system of linear equations represented by the augmented matrix. Use x, y, z, and, if necessary, w for the variables. Then use back-substitution to find the solution.
A. {(-8, -5, 8, -4)} B. {(-102, 124, 25, -3)} C. {(-3, 25, 124, -102)} D. {(-6, 0, 13, -3)}
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Find the coordinates of the vertex and the direction of opening of each parabola.y = -(x - 5)2 - 5
A. (-5, 0) opens upward B. (5, 5) opens downward C. (0, -5) opens upward D. (5, -5) opens downward
Mathematics
Find the LCD of the given rational expressions.
, 
A. x - 4 B. x C. 54 D. x(x - 4)
Mathematics