PLEASE HELP ME I DONT UNDERSTAND IM STRESSED

see explanation

Step-by-step explanation:

Y intercept is 500 because she is starting off with $500 each month

slope is 75 because she gets $75 more every time she sells one

start at (0,500) then plot a point at (1,575) then (2,650) increasing by 75 every time x increases by 1

If you start at (0,500) you can move backwards going to (-1,425) to (-2,350) decreasing by 75 as you move backwards

the equation is y=75x+500

table: -3    275  

        -2     350

        -1     425

         0     500

         1      575

         2     650

         3     725

         4      800

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!