Question

The cost of using a service is $0.25 per min. What equation correctly represents the total cost c, in dollars, for d days of use?

Answer 1

`c = 360d`

Explanation:

Given : The cost of using a service is $0.25 per min

To Find: What equation correctly represents the total cost c, in dollars, for d days of use?

Solution :

Since we are given that cost of using a service is $0.25 per min

Since 1 day = 24 hours = 1440 minutes

Cost of 1 min is $0.25

So, cost of 1440 minutes = 0.25*1440

= $360

So, cost for 1 day is $360

So, Total cost(c) for d days = $360d

Thus the required equation is :

`c = 360d`

Hence equation correctly represents the total cost c, in dollars, for d days of use :
`c = 360d`