Jim charges a different hourly rate for babysitting different numbers of children. The table below shows the pattern in the amount per hour that Jim charges. 0.8x + 6.7 0.8x + 7.5 Jim's Babysitting Rates Amount Number per Children Hour ($) 7.50 6.7x + 0.8 d) 7.5x + 0.8 8.30 9.10 4 9.90 The pattern continues. Which expression describes the amount, in dollars, that Jim charges per hour for babysitting x children?​