What number can both go into 20 and 249 evenly

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1