Please help fast...
10 question on triangles and please show your work...

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 expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Is the point (0, 8) on the x-axis or y-axis? how do you know?