Ifa-b=4 and a^2- b^2=3, what is the value of a+b?

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount