How to find the Perimeter?

Which elements in the set below are integers? 12, –3⁄4,√ 25 , –7, √ 5 , 14⁄7, 9 a. 12, √ 25 , –7, 9 b. 12, √ 25 , –7, 14⁄7, 9 c. –3⁄4, 25 , √ 5 ,14⁄7 d. 12, –7, 9

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1