#### Answer

Graph of F(x):

#### Work Step by Step

Maximum speed permitted on freeways = 65 mi / h
Minimum speed permitted on freeways = 40 mi / h
Fine for violating these limits is $\$$15 for every mile per hour above maximum speed or below
minimum speed.
Amount of fine as function F is
$F(x)=15(40-x) \ if 0 \ \leq x \lt40$
$F(x)=0 \ if 40 \leq x \leq 65$
$F(x)= 15(x=65) \ if x = 65$