25n represents this equation because, in cents, a quarter is worth 25 cents and n is the number of quarters you have. Not sure how you want to draw that though.
The output when it's ten is 250 cents.
The independent variable is the number of quarters because they affect the total overall cost.
The dependent variable is the total cost because it's what's determined.
(1) R+G+B=50 (2) R=B+6 (3) G=B-4 so substitute G in (1) R+B-4+B=50 substitute (2) in here B+6+B-4+B=50 group like terms and solve 3B+2=50 3B=50-2 B=48/3=16 substitute in (2) and (3) R=16+6=22 G=16-4=12 Check 22+12+16=50✅
