An plumber charges $50 for a service call, plus $85 per hour of service. If he charged $390, how many
hours did he work?

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

The constitution gives congress the power to create federal courts lower than the supreme court higher than the supreme court equal to the supreme court, unaffected by the supreme court.