Ms. fords class start art at 9: 30 and finish at 10: 15.they spend twice as much time in math class. if they start math at 1: 10,what time do they finish math?

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

We just started the introduction into circles and i have no idea how to do this.

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?