URGENT

Suppose you toss a fair, two-sided coin.
1.List the sample space.
2.List one possible event.
3.Calculate the probability of that event.

Joe has a rectangular chicken coop. the length of the coop is 4 feet less than twice the width. the area of the chicken coop is 510 square feet. what is the length of the chicken coop?

What is the pattern in the values as the exponents increase?

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?