Help is needed. Thank yall!

Asequence is defined recursively by the formula  f(n  +  1)  =  f(n)  +  3 . the first term of the sequence is  –4. what is the next term in the sequence? –7–117

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.