The revenue from selling x shirts is r(x) = 11x. the cost of buying x shirts is c(x) = 6x + 20. the profit from selling x shirts is p(x) = r(x) – c(x). what is p(x)? multiple choice: a. p(x) = 17x + 20 b. p(x) = 17x – 20 c. p(x) = 5x + 20 d. p(x) = 5x – 20

D. p(x) = 5x – 20

x + 4/7

step-by-step explanation:

use cymath

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.