The sales representative made a deal with the schools for a discount on
the individual juice bottles. the company usually sells the bottles to the
distributors for $2.25, but they are selling them to the schools for 15% off.
for what price will they sell each bottle to the schools?

$1.91

Step-by-step explanation: You get $1.91 because $1.91 is 15% off $2.25

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.