If x, y,z are the exterior angles of ∆ABC then find x+y+z

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

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 number line correctly shows 0.8 + 0.3?