The sum of two numbers, x and y, is 12. the difference of x and two times y is 6. what are the values of x and y?

x = 8, y = 4

x = 10, y = 2

x = 18, y = -6

x = 20, y = -8

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Equation for the calculation double 2 and then add 5

What is the slope of the line shown below?