Of the last 15 contestants on a game show, 3 won a prize. considering this data, how many of the next 20 contestants would you expect to win a prize

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Can you me find the missing length. i attached an image.

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups