James has $45 in his savings account. Each week, he earns and deposits $100 from mowing the family lawns. Write an equation that represents his total, y, after x weeks.
As he gets 100 each week the total for x number of weeks is 100x He had 45 to begin with so in total after x weeks he has 100x plus the 45 he begun with which is 100x+45 = y