The coach of the basketball team wants each player on the team to make at least 75% of the free throws attempted during regular season games. Currently, player Ortiz has attempted 30 free throws and has made 21 of them. How many free throws must Ortiz make in the next 10 attempts to reach the coach's goal?

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)