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

\mathrm { f }

that computes the cost of driving the van

x

miles, where

0 < x \leq

(Hint: express f as a piecewise-constant function.)
A) a.

\$ 6776

;
b.

f ( x ) = \left\{ \begin{array} { l l } 65 & \text { if } 0 < x \leq 40 \\ 65 x + 7 ( x - 40 ) & \text { if } 40 < x \leq 100 \end{array} \right.

B) a.

\$ 471 ;

f ( x ) = \left\{ \begin{array} { l l } 65 & \text { if } 0 < x \leq 40 \\ 65 + 7 ( x - 40 ) & \text { if } 40 < x \leq 100 \end{array} \right.

C) a.

\$ 471 ;

f ( x ) = \left\{ \begin{array} { l l } 65 & \text { if } 0 < x \leq 40 \\ 65 + 7 ( x + 40 ) & \text { if } 40 < x \leq 100 \end{array} \right.

D) a.

\$ 1031

;
b.

f ( x ) = \left\{ \begin{array} { l l } 65 & \text { if } 0 < x \leq 40 \\ 65 + 7 ( x + 40 ) & \text { if } 40 < x \leq 100 \end{array} \right.

Use a Graphing Utility to Find or Approximate the X-Intercepts y=9k2−62k−7y = 9 k ^ { 2 } - 62 k - 7y=9k2−62k−7

Multiple Choice

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Use a Graphing Utility to Find or Approximate the X-Intercepts $y = 9 k ^ { 2 } - 62 k - 7$

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