Gah! I need some help: 18 students are surveyed about what they were wearing.

7 students are wearing a sweatshirt.

3 students are wearing a hat and a sweatshirt.

5 students are not wearing either a sweatshirt or a hat.

How many students are wearing a hat, but not a sweatshirt?

Acircle has the equation (x-2)^2 +y^2 =5. what are the coordinates of the circle's center?

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28