Answer:
Freedomride charges $(20 + 0.04 D) for driving D miles than Envocar.
Step-by-step explanation:
Here, according to the given question:
By Envocar Cab Services:
The fixed Charge = $50.50
The charge per mile = 8 cents = 0.08 dollars
So, the charges of D miles = D x ( Cost per mile) = D x ($0.08) = 0.08 D
Now, the TOTAL CAB CHARGE = FIXED charge + Charge for D miles
= $50.50 + 0.08 D
⇒ For D miles, Envocar charges $50.50 + 0.08 D ..... (1)
By Freedomride Cab Services:
The fixed Charge = $70.50
The charge per mile = 12 cents = 0.12 dollars
So, the charges of D miles = D x ( Cost per mile) = D x ($0.12) = 0.12 D
⇒ For D miles, Freedomride charges $70.50 + 0.12 D ..... (2)
Now, the difference in the charge rate of Envocar and Freedomride is:
Charge of D miles by (Freedomride - Envocar)
= $70.50 + 0.12 D - ($50.50 + 0.08 D) = 20 + 0.04 D
Hence, freedomride charges $(20 + 0.04 D) for driving D miles than Envocar.
