algebra 1 mathmatics

Question

a phone company charges $.50 to make a phone call and then $.10 per minute after that. write an equation for the price you'd be charged to make a phone call with this company. Danny would like to make a 10 minute phone call. use your equation to help him figure out how much it would cost.

Answer 1

Let M = the number of minutes for a call

and C = the total cost of the call

Then tot Cost = the call charge + the charge per minute * number of minutes

C = 0.50 + 0.10 * M

For Danny's 10 min call. C = 0.50 + 0.10 * 10 = 0.50 + 1.00 = 1.50

Therefore the call will cost $1.50

Answer 2

The equation for the problem is .1x+.5. The .5 is the initial charge, and .1 per minute is represented by .1x. For a 10-minute call, x will be replaced by 10.

.1x+.5

.1(10)+.5

=1.50