Mr. Chen takes his 4 children to a museum. He buys an adult ticket for himself and a youth ticket for each of his children. The cost of an adult ticket is $12.00. The
total cost of all of the tickets is $42.00. What is the cost of each youth ticket?

He expression 2(l + w) is used to calculate the perimeter of a rectangle, where l is length and w is width. if the length is fraction 2 over 3 unit and the width is fraction 1 over 3 unit, what is the perimeter of the rectangle in units? fraction 2 over 3 unit 1 unit 1fraction 2 over 3 units 2 units

What is the slope of the line shown below?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)