Question

Medal ! Real Quick Help Needed. Thank You

Answer 1

For his phone service, John pays a monthly fee of $10, and he pays an additional
$0.06 per minute of use. The least he has been charged in a month is $71.68 .
What are the possible numbers of minutes he has used his phone in a month?
Use m for the number of minutes, and solve your inequality for m.

Answer 2

@Hero

Answer 3

@mathstudent55 @welshfella

Answer 4

Have you attempted to come up With an equation for this?

Answer 5

Im not even sure where to start

Answer 6

I suppose something like this 10 + 0.06 less than 71.68 not sure

Answer 7

Okay good, we have something to work with now,

Answer 8

If someone were to charge you SIX cents per minute for making a call how much do you get charged for the 1st minute? 7

Answer 9

Six cents

Answer 10

How much for 2 minutes?

Answer 11

12

Answer 12

And how much for 3 minutes?

Answer 13

18

Answer 14

Okay so here's what you calculated:

0.06(1) = 0.06
0.06(2) = 0.12
0.06(3) = 0.18

Answer 15

Right

Answer 16

Now if I were to ask you how much would you get charged for talking m mintes on the phone, how can you represent that?

Answer 17

Number of minutes = m

Answer 18

Well, but how much would you get charged?

Answer 19

It would be price = minutes

Answer 20

or the other way around

Answer 21

For m minutes you'd calculate

0.06(m) = 0.06m

Answer 22

So, that's what's missing from your inequality. The m

Answer 23

Oh right

Answer 24

So 10+0.06(m) less than 71.68

Answer 25

Also, questions like these can be confusing about which inquality symbol to use.

Answer 26

Oh yes would it be less than or equal to ?

Answer 27

i think i got it. 10 + 0.06m less than or equal too 71.68
So then we get m less than or equal too 1028

Answer 28

It says the amount that could be charged is at least 71.68 which means it could be that amount or it could be more which implies that m could be greater than the amount of minutes that would lead to being charged 71.68.

Answer 29

Sorry then its m greater than or equal too 1028

Answer 30

So in actually, the inequality is 10 + 0.06m >= 71.68

Answer 31

Yes and the answer is m >= 1028

Answer 32

So from there, you'd solve for m:

0.06m >= 61.68
m >= 61.68/0.06
m >= 1028

Answer 33

Great job.

Answer 34

Thank you for everything. I totally get this now

Answer 35

You're welcome.