Vick's Videos offers two membership plans. The first one is $25 annually with $1.50 per video rental. The second is $3 per vide rental, with no annual fee. What is the least amount of videos Leyla can rent where the first membership plan is cheaper than the second?

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75

yes, whats the problem?