Plz help meh guyz I need this ty ima be afk but plz still answer this

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Solve the equation by completing the square. x^2+2x=17

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)