An author is planning to attend a science fiction convention to promote her new book. There is a $50 registration fee to attend the convention. She plans to stay at a hotel with a daily rate of $105 and spend $30 on meals per day. Create an equation to represent her expenses, e, for the convention, based on the number of days, d, she will be in attendance. Use your equation to answer the foafowing question. How much will she spend to attend the convention for 3 days?