Sam’s Discount Tires advertise a tire that originally cost $50 on sale for $35. What is the percentage discount? need it fast if you can answer i’ll appreciate it! :)

Mp model with mathematics explain how the number of text messages dario sent and the cost form an arithmetic sequence.then write an expression to find dario's text messaging bill if he sends n text messages over 250.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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?