A single tree produces about 2.6 × 10² pounds of oxygen each year. The Amazon rainforest has about 3.9×1011 trees. About how many pounds of oxygen are produced in the Amazon rainforest per day?

21

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

the answer is two. hope this !

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.