Graphing exponential functions questions 7 and 8

7. a. and b. 768,000.

8. .

Step-by-step explanation:

We know that, the exponential model is given by , where a = initial amount, b = growth rate and x = time period.

7. We are given that the initial population of bacteria is 12,000.

Also, the culture of bacteria doubles each day.

a. So, the exponential model becomes , where x is the number of days.

b. Now, the population of bacteria after 6 days is i.e i.e.

Hence, the population after 6 days is 768,000.

8. We have that the initial number of students in the class is 4000.

Also, the growth rate of students is 5% i.e. 0.05.

Therefore, the number of students graduating t years after 2008 are i.e. .

y-1700=200(x+4)

step-by-step explanation:

200(x+4) is 200x + 800 she is saving 200 per week x is the weeks and the -1700 is. us that’s howmuch she already had

answer: the answer is 30 miles per hour.

ft/s -> mphmph = ft/s 1.466667mph = 44 divided by 1.466667mph = 30.00000

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