For this project you will be creating an exponential growth function to model the world population (f(x) = abx). To do this you will need two points. The first point being the
current world population 7.88 billion people. Go to the internet to find a second point
pick any year in the 1900's, and cite that source (you can use world population. With
two points you can create an exponential function, like we did in class. Let x = the
year, f(x) = world population in billions.

Lian is deciding which of two gyms to join. each gym charges a monthly rate plus a one-time membership fee. lian correctly wrote and solved a system of linear equations by substitution to compare the costs of the memberships. in her work, she substituted an expression for one variable and solved for the other. this resulted in the equation 75 = 75. what can lian conclude? one gym charges $75 per month. each gym charges $75 per month both gyms charge the same monthly rate and the same membership fee. both gyms charge the same monthly rate, but not the same membership fee.