The spread of a disease can be modeled as , where N is the number of infected people, and t is time (in days).How long will it take until the number of infected people reaches 1,400?

The equation shows the number of infected people from an outbreak of influenza. The variable represents the number of infected people, and represents time in weeks.In how many weeks will the number of infected people reach 1,280?

A bacteria population is 7000 at time t = 0 and its rate of growth is 1000 · 2t bacteria per hour after t hours. What is the population after one hour? (Round your answer to the nearest whole number.)

The equation shows the number of infected people from an outbreak of influenza. The variable represents the number of infected people, and represents time in weeks.

A bacteria culture initially contains 100 cells and grows at a rate proportional to its size. After an hour the population has increased to 420.(a) Find an expression for the number of bacteria after t hours.P(t) = 100·4.2t (b) Find the number of bacteria after 4 hours. (Round your answer to the nearest whole number.)P(4) = bacteria(c) Find the rate of growth after 4 hours. (Round your answer to the nearest whole number.)P'(4) = bacteria per hour(d) When will the population reach 10,000? (Round your answer to one decimal place.)t = hr

Fill in the blanks. Round answers to the nearest WHOLE number.Suppose that an outbreak of cholera follows severe flooding in an isolated town of 7494 people. Initially (Day 0), 92 people are infected. Every day after, 11% of those still healthy fall ill. A. At the beginning of the first day (Day 1), how many people are still healthy? B. How many will fall ill during the first day? C. What is the total number of people infected after the first day?