27. Parking fees Suppose that it costs 54 per minute to park at the air-
port, with the rate dropping to 34 per minute after 9 P.M. Find and
graph the cost function c(t) for values of t satisfying 0 S t = 120.
Assume that t is the number of minutes after 8 P.M.
a.
W
28. Taxicab fees A taxicab ride costs $3.50 plus $2.50 per mile for
b.
W
the first 5 miles, with the rate dropping to $1.50 per mile after the
fifth mile. Let m be the distance (in miles) from the airport to a
C.
hotel. Find and graph the piecewise linear function c(m) that
represents the cost of taking a taxi from the airport to a hotel
d.
m miles away.
29-34. Piecewise linear functions Graph the following functions.
e.
X
29. f(x)
X
1
if x * 1
42. F
N
if x = 1
x- - x - 2
30. f(x ) =
x - 2
if x * 2
4
if x = 2
31. f(x) =
3x - 1
if x = 0
-2x + 1 ifx > 0
32. f (x ) =
3x - 1 ifx < 1
Ix + 1 ifx 2 1:09 chard.
-2x - 1 ifx < -1
33. f(x) =
1
2x-1 ifx
2x + 2 ifx < 0
34. f( x) =
*+2
if 0 5 x= 2
3 -
if x > 2