7
the median is 7 :)
i hope this helped
Answer: 
Step-by-step explanation:
Given
A delivery service charge
for each delivery
and an additional
for each mile traveled
Suppose, x miles are covered
The charge is given by

Therefore, driver traveled 6 miles for delivery
Answer:
-4
Step-by-step explanation:
-4t+15=-1
Subtract 15 on both sides:
-4t=-16
Divide -4 on both sides:
t=-4