Is this figure a polygon why or why not

What’s 8y+48 and factor each expression completely

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?