a piece of machinery depreciates $6000 the first year, $5300 the second year, and $4600 the third year. If the rate of depreciation is constant, what is the amount of depreciation of the piece of machinery in the sixth year?

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

Can (3,5 and square root 34) be sides on a right triangle?