So to multiply standard form we multiply the 2 numbers and the 2 indices separately.
\(2.6*3.9=10.14\)
\(x^{2} * x^{11} = x^{13}\)
So we've got \(10.14*10^{13}\)
However Standard form must be \(1 \leq x \leq 10\) 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:
\(1.014*10^{14}\) lbs of oxygen are produced in the rainforest each year.
