Question

The phone company Ringular 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 500 minutes, the monthly cost will be $132. If the customer uses 700 minutes, the monthly cost will be $172.
A) Find an equation in the form
y=mx+b
where
x
is the number of monthly minutes used and
y
is the total monthly of the Ringular plan.

Answer 1

The equation in the form y = mx + b is as follows:

y = 1 / 5 x + 32

How to represent a linear equation?

The customer uses 500 minutes, the monthly cost will be $132. If the customer uses 700 minutes, the monthly cost will be $172.

Using linear equation in slope intercept form,

y = mx + b

where

• m = slope
• b = y-intercept

Hence,

x = the number of monthly minutes used

y = the total monthly of the Ringular plan

Therefore, the equation in slope intercept form can be represented as follows:

(500, 132)(700, 172)

let's find the slope,

m = 172 - 132 / 700 - 500

m = 40 / 200

m = 4 / 20

m = 1 / 5

Hence,

y = 1 / 5x + b

using (500, 132) let's find the y-intercept

132 = 1 / 5 (500) + b

132 = 100 + b

b = 132 - 100

b = 32

Therefore, the equation in the form y = mx + b is as follows:

y = 1 / 5 x + 32

learn more on equation here: brainly.com/question/27864877

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