Chinedu sat down to do his homework, which included 30 math problems. he solved 2 problems each minute. let f(n) be the number of problems left for chinedu to solve at the beginning of the 9 th minute.

14

Step-by-step explanation:

If he is solving 2 problems per minute and 8 minutes have passed, he has solved

2*8 = 16  problems

There are 30 problems and he has solved 16

30-16 = 14

There are 14 problems left to solve at the start of the 9th minute

the answer is b

mathpapa

step-by-step explanation: