2. Brooke East Boston students were surveyed about their favorite sports. 108 students selected either volley ball or tennis as their favorite sport. How many students in all were surveyed?
Students Favorite Sports
22% +18% +18% +13%+296
31% +29%
Basket Bal
22%
Volley Bed
18%
40% +
108
Tennis
18%
29%
Soccer
108
71% +29
13%
Badminton
100%
10D

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.