Asingle tree produces about 2.6 × 10² lb of oxygen each year. the amazon rain-forest has about 3.9×10^11 trees. about how many pounds of oxygen are produced in the rain-forest each day ? 2.8*10^?

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|

the height of the surface increases from the center out to the sides of the road

it is c!