Write ratio for each situation for 310 heartbeat per 5 minutes

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Question 9 of 10 2 points suppose your sat score is 1770. you look up the average sat scores for students admitted to your preferred colleges and find the list of scores below. based on your sat score of 1770, which average score below represents the college that would be your best option? o a. 1790 o b. 2130 o c. 2210 od. 1350