Short answer:
TotalCost = 12.96
Long answer:
It gives you the equation of
total cost = C + 0.08C
You just need to plug-in the $12 to the equation.
In other words, the equation is:
TotalCost = 12 + 0.08*12
TotalCost = 12 + 0.96
TotalCost = 12.96
Answer:

Step-by-step explanation:
Given:


Substitution can be used to find the value of
:




Hope this helps :)
Step-by-step explanation:
1 l = 22.5 km
125 l = 22.5 × 125 = 2812.5 km