Answer:
20%
Step-by-step explanation:
20% of 50 is 10, and they spent 10 hours walking.
To complete the conversion, the following will be gotten:
12880 m
<h3>How to convert distance?</h3>
Using conversion technique,
8 mi / 1 × 1.61 k / 1 mi × 1000m / 1k
we have to cancel out similar units in the numerator and denominator.
Therefore,
8 mi / 1 × 1.61 k / 1 mi × 1000m / 1k
8 / 1 × 1.61 / 1 × 1000m / 1 = 12.88 / 1 × 1000m
Hence,
12.88 / 1 × 1000m = 12880 m
learn more on conversion here: brainly.com/question/16887207
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Start writing 78% as a fraction or decimal

Multiply by the number 80

The 78% of 80 is equal to 62.4
An exponential growth model has the form:

we know that the initial population was 3000 and that after seven years the population was 3525, plugging this vales and solving for the unknown we have:

Therefore the missing part of the function is 0.083