On Roberto’s shelf are: • 6 mystery books • 5 science books • 4 history books • 3 adventure books Roberto will randomly choose 1 book to read. What is the probability that he will choose an adventure book? ​

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

Explain why the factor 1.5 is broke. into two numbers in the model.

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