Equipment is purchased for $18,000 & has a salvage value of $2,000. The estimated life is 10 years & the method of depreciation is straight-line. Shipping costs total $620 & installation costs are $590. The book value at the end of year 10 is?

Abag contains 5 red marbles , 6 blue marbles and 4 green marbles. susie selects a marble and returns it to the bag before selecting another marble. if susie selects a red marble 6 out of 20 times, what is the experimental probability that the next marble she selects will be a red marble ?