Question

Help! How do you find out an equation for this: "Certain species of tree grows an average of 4.2 cm per week. Write an equation for the sequence that represents the weekly height of this tree in centimeters if the measurements begin when the tree is 300 centimeters tall."

Answer 1

It starts at 300 cm tall, and adds on an extra 4.2 cm every week:

300+4.2x=height, where x is the number of weeks passed.