A diagram is made to figure out the carpet needed to cover a floor. If the total cost of the carpet is $875.25, what is the cost, in dollars, of the carpet per square foot? length is 20 ft and width is 9ft .help me plz

With #! i’ve tried to figure it out but i can’t.

Answer this question only if you know the answer! 30 points and

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?