Can you guys help me I pay you please

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Which graph represents the linear function below? y-4= (4/3)(x-2)