SOLUTION: George invested some money at 5% interest. George also invested $219 more than 4 times that amount at 10%. How much is invested at each rate if George receives $922.80 in interest

$1564 was invested at 5%

$6475 was invested at 10%

Step-by-step explanation:

Let the amount invested at 5% be X

And that invested at 10% be Y.

Interest on X

Interest on Y

From the question,

Interest on Y

Also, from the question, both interests add up to $922.80

(f+g)(x) = 3^x+10x+4x-2

      =3^x +14x-2

choice b