Ross and Gabby sold boxes of cookies for their soccer team fundraiser. Ross sold b boxes of cookies, and Gabby, g, sold 35 boxes of cookies. Together they sold a total of 69 boxes of cookies. Which expression correctly shows how many boxes Ross sold and how to find this number? Choose all that apply
35 + G = 69 boxes
b - 69 = 34 boxes
69 - G = 34 boxes
69 - 35 = b