A family cell-phone plan is sold for $35 a month for the first line and $20 for each additional line. a. write a recursive formula for the monthly cost of the plan for n users

b. write a explicit formula for the monthly cost of the plan for n users​

b) the dogs need to shift their focus to human scent.

i don't have the answer rn but go to math papa. it shows the steps and the answer. hope this : )

step-by-step explanation:

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.