A red light flashes 3 times per minute and a green light flashes 5 times every two minutes at regular intervals. The lights flash every seconds. the lights flash together every seconds. And how many times do they flash together each hour?

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?

Which ordered pair is the best estimate for the solution of the system of equations? the graph of the system of equations : y = 3/2x +6 and y=1/4x - 2 , -3) .5, -3.5) , -4) , -3.5)

Jack brought 12 pet monkeys. if each monkey cost $45.99, how much money did he spend in all?