how do i find the nomial rate?

A=500×(1.01^(4t))

is there a formula to find it? confused

a nominal rate of r compounded n times per year is

(1+ r/n)^(nt)

So, since you have a 4t there, .01 = r/4, making r=4%

(1 + .04/4)^(4t)