What is the slope of y equals xm plus b

What is the equation of the graph below? y=sec(x)-4

What are the domain and range of the function f(x)=2^x+1

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?