I could use help on this question. ​

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?

Which of the following represents the range of the graph of f(x) below

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2