What is the nth term of the geometric sequence 4, 8, 16, 32, ..?

Triangle xyz has vertices x(1,3), y(0,0)

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?

How many terms does the polynomial x^2 y^2 have