-7(x - 5) = 91 bro I need help and i must show work

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827