28+12
—————
13-5
7th Grade Math Book (McGraw-Hill) page 9 exercise 26

Find an equation (in term of x) of line through the points (-1,3) and (1,4)

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?

Don't know how to find x given these segment lengths