A train of length 180 m approaches a tunnel of length 620 m. How long will it take the train to pass completely through the
tunnel at a speed of 54 km/h?

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?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers?