Question

The cost of using a telephone in a hotel meeting

room is $0.20 per minute. Which of the following
equations represents the total cost in dollars, for
h hours of phone use?

Answer 1

so its 12 dollars an hour

x means the cost

12(h)= x

Answer 2

c = 0.20 (60h)

Explanation:

The hotel charges $0.20 per minute to use the meeting‑room phone. This per‑minute rate can be converted to the hourly rate using the conversion 1 hour =60 minutes, as shown in the following equation.

​
`(0.20)/(minute)` ×
`(60 minutes)/(1 hour)` =
`(0.20 * 60)/(hour)`

Thus, the hotel charges 0.20×60 per hour to use the meeting‑room phone.

Therefore, the cost c, in dollars, for h hours of use is c=(0.20×60)h which is equivalent to c=0.20(60h).