David is 4 times older than adan. adan is 2 times older than julio. julio is 12, how old is david?

What is the greatest common factor of 8 and 36

Write the linear inequality shown in the graph. the gray area represents the shaded region. y> -3y+5 y> 3x-5 y< -3x+5 y< 3x-5

What is the solution set of the quadratic inequality x^2-5< or equal to 0