Zachary's cornfields are irrigated in circular regions. Zachary records data on the com production from various irrigated circular regions.

Radius (ft) Bushels of Corn

500

2,705

1,000

10,818

1,500

24,341

2,000

43 273

2,500

67 613

Use the equation f(x) = 0.01x2 + =

A about 3,000 ft

X+0.2 to estimate what radius Zachary would need to irrigate 250.000 bushels of com

B. about 4 875 ft

C. about 3,967 ft

D. about 5,000 ft

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)