Which of the following equations has both 1 and −3 as solutions?
a. x2 – 2x – 3 = 0
b. x2 + 2x – 3 = 0
c. x2 – 4x + 3 = 0
d. x2 + 4x + 3 = 0

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.  

Me. brady is putting trim around the edge of circular merry-go-round that has diameter of 15 feet. how much trim does he need to buy to the nearest tenth

What is the distance between (5 - 2i) and (8 + i)?