$500(1+0.045)^8 -$500(1+0.04)^8

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?