Apopulation of bacteria begins with 1 bacterium and triples every hour. which equation can be used to model this situation?

For this case, what you should do is write an equation of the potential type to model the problem.
 An equation of the potential type can be for example:
 n (t) = A * (b ^ t)
 Where
 A: initial population
 b: number of times the population grows
 t: growth time (hours)
 The equation that best describes this problem is
 n (t) = 1 * (3 ^ t)
 answer
 n (t) = 1 * (3 ^ t)

Answer: choice c and choice d

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explanation

the graph has a slope of 1/3 because each time you move up 1, you go to the right 3. so, slope = rise/run = 1/3. we can cross choice a off the list since we want a slope of 3, rather than 1/3.

the first table shown has a slope of -3. this is because the rise is -6 and the run is 2, so slope = rise/run = -6/2 = -3. note how x increases by 2 each time (run) and y drops by 6 each time (rise). choice b can be eliminated.

the second table has a slope of 3. each time x goes up by 1, the y values increase by 3. slope = rise/run = 3/1 = 3. alternatively you can use the slope formula to prove that the slope is 3 here. use any two rows of values to generate the two points. choice c is one of the answers

the third table also has a slope of 3. let's use the slope formula to prove as such. i'm going to use the first two rows of the table. so i'll use the two points (2,1) and (5,10)

m = slope

m = (y2-y1)/(x2-x1)

m = (10-1)/(5-2)

m = 9/3

m = 3 so we get a slope of 3

choice d is the other answer

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