Write a recursive formula for the amount of helium in the balloon after n days.

an= an- 1 where a1 =

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Ineed with number 6 , explain how to get 1978

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers