Answer:
its the second one
Step-by-step explanation:
116 × 115
______
100
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Let x = number of days
The initial number of frogs = 21.
The number of frogs triples every 7 days.
The exponential function that models the number of frogs with respect to the number of days is

When the population is 150, then

A graph of y versus confirms the answer.
Answer: 12.5 days
That is the third choice.
If we add the 2 equations we get
2y = -12 so y = -6
substituting in one of the equations we get x = 0
I’m not sure can someone please answer this