While reviewing for exams a teacher knows that the number of topics he can cover is directly proportional to the length of time he has to review. if he can cover 9 topics in a single 45-minute period, how many topics can he cover in a 1-hour period? a) 5 b) 7 c) 10 d) 12

the answer is D

Step-by-step explanation: so you know that he can do 9 topics in 45 minutes. which is 1 topic every 5 minutes when you divide 45/9. if there is 60 minutes in an hour, and he does 1 topic every 5 minutes, he would do 12. hope this helps xd

i believe it is b and c. (side note, i got the same computer from k-12 lol i’m in 8th grade and this is my first year, will it get

step-by-step explanation: