How do i simplify -42+(-17) 8-(-9) 8(-9) -42 devided by(-7)

Afootball is throw by a quarterback to a receiver

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 3x^2 -2x =0 2) 2x^2 =3x 3) 2 * 2 = 2 * 2 4) 6 +2x = 2(4x)