For a short time after a wave is created by wind, the height of the wave can be modeled using y=a sin 2pi/t, where a is the amplitude t is the period of the wave in seconds. how many times over the five seconds does the graph predict the wave to be 2 feet high

Find the quotient. 50a2 – 98b2 -5a +7b

Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?