Question 6 (1 point) Substitue the value 4 for 'a' and solve the following expression to 1 decimal places. a .: Nim = 5 Your Answer: Answer Question 7 (1 point) This year, the college enrolled 6,790 students. Last year, enrollment increased by 6.0% over the year before and this year enrollment increased by a further 220 students over last year. How many students were enrolled two years ago (rounded to the nearest student)? Your