If 5r + 6 < 36, then a) r< 6 b) r< 8 c) r< 12 d) r< 30 e) not given

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

What is the slope of the line passing through the points (-5, 7) and (-3,5)?