Prime factorization of 168 using exponents

Passengers usually start to board their flights 1 hour before the scheduled take off time. the gate will be closed 15 minutes before the takeoff time. jack’s plane is scheduled to take off at 12: 05 a.m. if he arrives at the gate at 11: 45 p.m., can he board the flight?

Look at this expression. a3b3c a-3b-3c-1 which of the following is the simplest form of the expression above?

How many $20 bills do you need to have to make $280