18,480 feet is how many miles if one mile = 5280 feet?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2