I'm lost, can someone explain?

if the arc length shown is 21.3 inches, find __ to the nearest hundredth of a radian.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?