The growth rate of the population of a county is P' (t) = \\/i(4220t + 8430), where t is time in years. How much does the population increase from t = 1 year to t = 4 years? The velocity function, in meters per minute, of a particle moving along a straight line is v(t) = 7t 3, where t is time in minutes. 1. Find the displacement of the particle from t = 2 minutes to t = 5 minutes? meters Submit Answer Incorrect. Tries 6/99 Previous Tries 2. Find the time twhen the displacement is zero after the particle starts moving? minutes The acceleration of a cart seconds after the driver steps on the brake, before the car comes to a full stop, is a(t) = (t 5)2 mph per second. What's the decrease in velocity in mph 4 seconds after the brake is applied? A faucet is turned on at 9:00am and water starts to flow into a tank at the rate of r(t) = 8V3, where t is time in hours after 9:00am and the rate r(t) is in cubic feet per hour. 1. How much water, in cubic feet, flows into the tank from 10:00am to 1:00pm? cubic feet Submi'Answer Tries 0/99 2. How many hours after 9:00am will there be 154 cubic feet of water in the tank? Round your answer to the nearest tenth. hours