Question: “The equation 3x+7y=105 represents the number of bags of sand, x, and bags of mulch, y, that can be brought with $105. If no bags of sand are brought, how many bags of mulch can be purchased with $105?” Choices:

A. 35
B. 10
C. 15
D. 17

What the heck i didn’t know

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,