What happens to the slope when a line with positive slope gets close to vertical

Find the solution(s) to x^2-14+49=0

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?

Is (root2 -2)^2 rational or irrational. show the steps and answer fast