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Marco is studying a type of mold that grows at a fast rate. He created the function f(x) = 345(1.30)x to model the number of mold spores per week. What does the 1.30 represent? How many mold spores are there after 4 weeks? Round your answer to the nearest whole number.

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kanest

1.30 represents the rate of growth of the mold spores. This decimal is a representation of the percentage growth, which would be 130%.


Since the function is written in terms of weeks, x will equal 4 to represent the amount of spores after 4 weeks. Plug the value into the function:


[tex] 345(1.30)^4 = \boxed{985.35} [/tex]


Rounded to the nearest ones value, there will be 985 mold spores after 4 weeks.

Answer:

D.  1.30 represents the 30% rate of weekly growth; 985 mold spores

Step-by-step explanation:

thats the answer choice

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