What gas important to life was absent from earth's earliest atmosphere?

A.

nitrogen

B.

methane

C.

oxygen

D.

carbon dioxide

Leela received $1000 as a gift when she graduated high school 4 years ago. She deposited the money in a savings account that earns 6% interest per year.

Peg and larry purchased "no contract" cell phones. Peg's phone cost $25 plus $0.25 per minute. Larry's phone cost $35 plus $0.20 per minute. After haw many minutes of use will Peg's phone cost more then Larry's phone?

How much will you have contributed to a Whole Life insurance policy that has a face value of $60,000 over a 40-year period, given that the permanent insurance amount for a healthy 30-year-old male is $18.54 per thousand.

The perimeter of a rectangle is 80 feet. Find the dimensions if the length is 5 feet longer than the width

My neighbor has two cats and both cats have yellow eyes. therefore when to cats live together, they will both have yellow eyes.

Simplify: 3[2 (6 + 4) - 8]+8:2

Aiden measures a book with paper strips. It is actually 10 paper strips long, but he gets an answer of 8. What is his mistake?

Mia's new puppy weighed 3 1/5 pounds at 4 weeks old. At 16 weeks old, the puppy weighed 9 1/7 pounds. By what factor did the puppy's weight increase during that period? Write your answer as a mixed number.

What are system of inequalitues

Your favorite restaurant offers a total of 14 desserts, of which 8 have ice cream as a main ingredient and 12 have fruit as a main ingredient. Assuming that all of them have either ice cream or fruit or both as a main ingredient, how many have both