Asingle tree produces about 2.6 × 10² lb of oxygen each year. the amazon rainforest has about 3.9× trees.
about how many pounds of oxygen are produced in the rainforest each day ?
enter your answer in the box.
2.8 × 10
lb

Start by simplifying, 10^2 = 100, 100*2.6 = 260    so for the other side we
 
10^11= 100000000000,  100000000000 times 3.9 = 390000000000 so for the

final answer we multiply the two numbers stop get a 

final answer of  260 times 390000000000 = 1.014e+14

Ithink if im not mistaking b is -3 but im not a 100% sude

Idon’t feel like doing the math but you need to do 2.24 divided by 7