Jason had $284.31 on his student lunch account at the
beginning of the school year. During the year, he mowed
lawns for extra money to add to his lunch account. He
mowed 13 lawns and earned $30 for each lawn. By the
end of the school year, he had spent $782.75 on his
lunches. What was the balance in Jason’s account at the
end of the school year?