SAT Khan Academy Solving Quadratic and Exponential Word Problems Level 2

[@jalaalkh4133]

Hello. First of all thank you for this helpful video. I want to ask why did we squared the X in the last question? And i want to make sure about my understanding of what a represents, it represents the increase between the years right ?

[@chantelletyche6148]

hi there, where is the (0.014) coming from in question 3?

[@ScalarLearning]

Bc it’s a growth rate of 1.4%, so move decimal over twice

[@annge5730]

hello! Why didn't you put .42t in the first question since it says F(t)?

[@ScalarLearning]

Because it related to the function value in terms of how much is left.

[@radheychauhan5919]

log nahi aata bhai! find a way to solve these without log.