All the pupils participating in the school play either are actors and actresses or stage- hands working behind the scenes. 30% of the scholars are working as stagehands. 35 scholars are actors and actresses. How many students in total are in the school play, acting and working behind the scene?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?