Use the table to write a linear function that relates y to x

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Solve for the equation x. 2x + 22 = 4(x + 3)

Identify the number as a regional or irrational. explain. 291.87