Given an annual effective interest rate of i > 0, the following two series of payments have the same future value of f a 20-year annuity making payments of 5 at the end of every two-year period a 20-year annuity-immediate with payments of 2 per year calculate f. round your answer to the nearest whole number.

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .