Last year there were 80 fish in the lake. The number of fish in the lake decreased by 30% this year. What is the population this year?

Ill mark the brainliest if you me with the these three questions 7,8,9

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol