Question

Jim is learning German through an app on his phone. According to the app, he already knows 600 German words, and his goal is to learn 10 new words each week. You can use a function to describe the number of German words Jim will know x weeks from now if he sticks to his goal.
Write an equation for the function. If it is linear, write it in the form f(x)=mx+b. If it is exponential, write it in the form f(x)=a(b)x

Answer 1

This is linear growth: each week he gains 10 words starting from 600.
f(x) = 10x + 600, where x is weeks from now (x ≥ 0).