Answer:
F(4) = 9
Step-by-step explanation:
Notice that for f(4), we need to use the function definition for the partitioned Domain that includes x = 4, and that is the expression :

Therefore:

Use the proportion inches per miles.
.5 in / 2 miles = 2.75 in / d miles
Hope this helps :)
18-4x=7x+7
(subtract 7 from both sides)
11-4x=7x
(Add 4x to both sides)
11=11x
(divide both sides by 11)
X=1
Answer:
A 2 miles per hour
Step-by-step explanation: