Landry is opening two savings accounts. he is opening the first account with an initial deposit of $500

t = (f - v)/a

Step-by-step explanation:

We have been given that;

The equation f = v + at represents the final velocity of an  object, f, with an initial velocity, v, and an acceleration rate,  a, over time, t.

The question requires us to solve for t;

The first step is to subtract v on both sides of the equation,

f - v = v + at - v

f - v = at

The next step is to divide both sides by a,

(f - v)/a = t

which is our required equation solved for t.