The phone company NextFell has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 370 minutes, the monthly cost will be $205. If the customer uses 770 minutes, the monthly cost will be $405.

Let, fee and amount of money per minute used is P and m respectively.

Also, monthly fee is given by C.

The linear equation is given by :

( Here, x is the number of minutes )

Putting both the conditions in above equation, we get :

     .....1)

     .....2)

Subtracting 2 by 1, we get :

(770 - 370)m = 405-205

400m = 200

m = $0.5 .

So, c = 205 - 370×0.5

c = $20 .

Therefore, monthly fee and fee per minute used is $20 and $0.5 respectively.

Hence, this is the required solution.

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.