What is the period of the nine in 913256

Question and answers are in the attached picture. you so much in advance.

5.(04.07) two different plants grow each year at different rates, which are represented by the functions f(x) = 4* and g(x) = 5x + 2. what is the first year the f(x) height is greater than the g(x) height? year 3 year 0 year 2 year 1

What describes horizontal cross section of the right rectangle 6m 8m 5m