Simplify the expression:
10p - 4p + 7 - 4p

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

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?