A single tree produces about 2.6 * 102 lb of oxygen each year. The Amazon rainforest has about 3.9 * 1011 trees.

About how many pounds of oxygen are produced in the rainforest each day

An angle measuring (870n) ° is in standard position. For which value of n will the terminal side fall along the positive portion of the y-axis?

What are the potential solutions of (x^2 - 25) = 0?

200 people were surveyed in order to see which store was more popular for buying groceries. Of these people, 115 were female and 82 said that they preferred Kroger over Giant Eagle. 56 males said that they preferred Giant Eagle.

What is "a number that is at least 90"

Find the product (3a-2b) (3a+3b)

Convert 39/5 to a mixed number written in lowest terms

the home teams score exceeded 2 times the visiting teams score by 5 if the visiting teams score is x which expression represents the home teams score

How to solve this equation x-9=-6x+5

Y=5x+21 and y=-7x-15

Two researchers are studying the decline of orangutan populations. In one study, a population of 784 orangutans is expected to decrease at a rate of 25 orangutans per year.