Urgent 6. a cell phone plan costs $30 per month for unlimited calling plus $0.15 per text message. write a linear equation that represents the monthly cost of this cell phone plan if the user sends t text messages. if you send 200 text messages, how much would you pay according to this cell phone plan? 7. a cable company charges a family a $100 installation fee and then $65 per month for a year. write a linear equation that represents the cost of the plan after m months? how much money will the family spend when their year-long contract is up urgent do each question separately 20 points

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1