Thread: cost equation

Question: $50 upfront charge and 0.20cents per km

A) cost equation for kilometres traveled(d)
B) $120 is the cost, what is the distance traveled

Originally Posted by alysha230893

Question: $50 upfront charge and 0.20cents per km

A) cost equation for kilometres traveled(d)
B) $120 is the cost, what is the distance traveled

Let = Total cost
Let = Distance traveled

They charge to $50.00 plus $0.20 every km.

So,



If the total cost is $120.00
Then
Let

Substitute.


Solve for

Subtract both sides with 50






Multiply both sides by 5 (to make 0.20=1)