Without using calculator, estimate the answers to the following: a) 5520÷13
b) 48÷0.12
c) 610÷0.22

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?

If the equation of a perpendicular bisector of a triangle is y = 2x + 7, what is the slope of the side that it is bisecting? explain how you know. 

If f(x)=x/2-3 and g(x)=4x^2+x-4, find (f+g)(x)