Jon sells books on the internet for $12 each and spent $180 on shipping last
month. Represent on a number line the
number of books, x, he sold last month
if he earned a total of $720.

The elmina wilson company produces spaghetti sauce that is used in restaurants. the fixed costs total $1,329,050. the selling price per 64 oz. can of sauce is $12.40. the variable cost per can is $4.80. what is the break-even point in number of cans?