A certain store sells only T-shirts. Let the random variable X represent the number of T-shirts bought from the store on any day, with a mean of 75 and a standard deviation of 20. Let the random variable Y be the total revenue from
this store on a randomly selected day. If the store charges $15 per T-shirt, what are the mean and standard
deviation of Y ?

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.

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2

what is

step-by-step explanation: