The histogram below shows the ages of people that came to a doctors office this morning grouped by age.
How many people were greater than or equal to a 20 years old but less than 60 years old?

When y’all answer can y’all explain too !

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

6x + 3y = -6 2x + y = -2 a. x = 0, y = -2 b. infinite solutions c. x = -1, y = 0 d. no solution