Rob has already taken 35 quizzes during past quarters, and he expects to have 2 quizzes during each week of this quarter. How many weeks of school will Rob have to attend this quarter before he will have taken a total of 45 quizzes?​

You coordinate volunteers for litter cleanup in local parks. your spreadsheet lists drivers and the number of seat belts in each driver’s car. the spreadsheet calculates the number of drivers (d) and the total number of seat belts (s). you want to know the maximum number of volunteers, besides drivers, that can be transported to the park in a single trip given that each person must have a seat belt of their own.