Solving systems worksheet— please help mostly just need an explanation
erased my work cause I’m pretty sure I did it wrong

Last one is 3,17

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

Henry's butcher shop uses an electronic scale that measures to 1/100 of a pound. which is the most accurate measurement based on the limitations of the scale that might be found on a package of meat sold by henry?

Leonardo wrote an equation that has an infinite number of solutions. one of the terms in leonardo’s equation is missing, as shown below.