Graphing functions - alg2: can someone explain how to get from -x{2} + 4x - 1 to y? i'm having trouble figuring out how to get to y. you.

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

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?