(1 point) A bacteria culture grows at a rate proportional to the current size. The bacteria count was 800 after 5 hours and 2900 after 8 hours. Find the relative growth rate, (rate of change of size) divided by (size). What was the initial size of the culture? Find a formula for the size of the culture after t hours. Aftert hours, size will be 555 bacteria Find the number of bacteria after 6.5 hours. After 6.5 hours there will be 555 bacteria Find the rate of growth after 6.5 hours. After 6.5 hours the rate of growth will be When will the population reach 4100? The population will reach 4100 after 555 hours (1 point) A radioactive substance has a half-life of 78 days. A sample has a mass of 150 mg initially. Find a formula for the mass remaining aftert days. Mass remaining after 75 days is Find the mass remaining after 138 days. Mass remaining after 138 days is mg The decay rate is minus one times the rate of change of the mass. decay after 138 days? Decay rate after 138 days is How long does it take the sample to decay to a mass of '10 mg? Sample will decay to 10 mg after days ::: mg What is the rate of ::: mg/day (1 point) Assume that a population size at time t is given by N(t) where N(t) : 90-421: 3 0. How big is the population size at time t : 0? ::: How long will it take until the population size reaches 3500