Algebra help please

Question

There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10 selections. Show your work.

Answer 1

There are red checkers and black checkers in a bag.

Checkers are selected one at a time, with replacement.

Each time, the color of the checker is recorded.

Probability of selecting a red checker exactly times in selections is

Find the probability.