One car rental company rents its cars at a rate of
$30 per day and $0.30 per mile driven.

A second car rental company rents its cars for
$25 per day and $0.50 per mile driven.

(i) Let x be the number of miles driven, and y the cost of the rental. Write an equation for the cost of driving x miles in one day under the rate used by the first company:
y =

(ii) Let x be the number of miles driven, and y the cost of the rental. Write an equation for the cost of driving x miles in one day under the rate used by the second company.
y=

Question

One car rental company rents its cars at a rate of 
$30 per day and $0.30 per mile driven. 

A second car rental company rents its cars for 
$25 per day and $0.50 per mile driven.


(i) Let x be the number of miles driven, and y the cost of the rental. Write an equation for the cost of driving x miles in one day under the rate used by the first company: 
y = 

(ii) Let x be the number of miles driven, and y the cost of the rental. Write an equation for the cost of driving x miles in one day under the rate used by the second company. 
y=