Answer Happy

dN A chemical substance has a decay rate of 7.3% per day. The rate of change of an amount of the chemical after t days is given by dt = -0.073N a) Lot No represent the amount of the substance present at t= 0. Find the exponential function that models the decay. b) Suppose that 300 g of the substance is present at t=0. How much will remain after 3 days? c) What is the rate of change of the amount of the substance after 3 days? d) After how many days will half of the original 300 g of the substance remain? a)NU- b) After 3 days,g will remain (Round to the nearest whole number as needed.) c) After 3 days, the rate of change is g/day (Round to one decimal place as needed.) d) Half of the substance will remain after days. (Round to one decimal place as needed.)