Question

Let I = f(x) be the total interest earned from investing the $12,000 for one year. Find an equation of f

Answer 1

Total interest=interest from 1.92% account + interest from 8% account.
I=0.0192x+0.08y
x+y=12000
(Either or)

A=P(1+r/n)exponent of n multiplied by t