Find the equation of the circle who center and radius are given

center (0,8)
radius = 8

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

Which statement about the graph of y = 8(0.25)^2

Issof claims that the scale factor is 1/2. which statement about his claim is correct