Find area and perimeter of 2x+5 and 3x-2

Find the greatest common factor of 28 and 35

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

Which graph represents the following piecewise defined function?