Alexia started babysitting when she was in high school. she has built a reputation for herself and has become popular among the neighborhood parents. alexia charges $10/h and gets a $5 automatic tip. alexia needs $75 to buy a present for her mother. she wants to find out the minimum number of hours she needs to babysit at one job to get the money she needs. (5 points) a. write an inequality to show how to solve this problem. identify what the variable is and what it represents. b. solve the inequality to find out the minimum number of hours alexia needs to babysit. show your work.