Daniella is shopping for movie online

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

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?