8) A farmer finds that if she plants 85 trees
per acre, each tree will yield 70 bushels of fruit. She estimates
that for each additional tree planted per acre, the yield of each
tree will decrease by 4 bushels. How many trees should she plant
per acre to maximize her harvest?
? trees
9) A company's revenue from selling x
units of an item is given as R=2000x−3x2. If sales are
increasing at the rate of 55 units per day, how rapidly is revenue
increasing (in dollars per day) when 150 units have been
sold?
? dollars per day
Give your answer rounded to the nearest whole number.
Get Answers For Free
Most questions answered within 1 hours.