Use a graphing calculator! This unit is exponential and logarithmic functions

2. The decay of a radioactive substance is recorded in the table below. Time [minutes] Amountlgrams} I 0 430 5 444.39 '10 I 33039 20 352.63 25 331.54 a} Determine an equation that models the data b} How much radioactive substance will be left in 12 minutes? How long will it take the radioactive substance to decay to half of its original amount? d} State the range of the function 3. The population of a city since 1996 is shown in the table below. Population Number of years since 1996 27500 '4 23000 '5 23500 '6 29000 is 30700 '10 A} Determine the logarithmic equation that models this data bl Using your equation , predict the population of the city in 2016