Answer:
69
Step-by-step explanation:
do you need the explanation
Step-by-step explanation:
I tried. if I got this wrong I might need to go back to kindergarten
So to multiply standard form we multiply the 2 numbers and the 2 indices separately.


So we've got

However Standard form must be

therefore we need to divide that by 10 but to get the same number we add one onto the power of 10.
So the answer is:
lbs of oxygen are produced in the rainforest each year.