Abasketball player made 63 out of 100 attempted free throws. what percent of free throws did the player make?

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

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?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.