here is a math problem i need the answer and the work?

Question

A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 per minute for all calls. If Joe's phone bill was $47 under his promotional deal, how many minutes of phone calls did he make? round to the nearest integer if necessary.

Answer 1

m= minutes joe called (start with an unknown for what you want)

the first sentence tells us that he will pay $15 + $.05 times every minute he talks

so

15+m*.05 = 47

now do the algebra

.05m=32
m=640

Answer 2

The amount of any phone call under this plan would be 15+0.05m where m is the number of minutes used up.

-- 15 + 0.05m = 47
-- 0.05m =32
-- m = 32 * 20 = 640

So Joe talked for 640 minutes, or a bit over 10 and a half hours.

Answer 3

you subtract 15 from 47 which gives you 32. then divide 32 by .05 , that gives you 640. theres your answer 640 minuts

Answer 4

Let x = number of minutes, y = amount of bill, then
y = .05x + 15
47 = .05x + 15
47 - 15 = .05x +15 - 15
32 = .05x
x = 32/.05
x = 32(20)
x = 640 minutes

Answer 5

I believe almost 650 minutes. too tired to show work.

The girl above me is probably more acurate :)

Answer 6

stop making us do your homeowrk... I'll tell your mother..