A client needs to save $7000 dollars in 7 years. If they invest at $LaTeX: \displaystyle 5.1$ % compounded monthly, how much do they need to invest today?

Using the forumla for present value $LaTeX: \displaystyle PV = \frac{7000}{ (1 + (0.051/12))^{84} } = 4902.11$ dollars.