The walnut middle school cafeteria staff wants to know which types of pizza to serve. The staff surveys every 5th student that walks into the cafeteria about their pizza preference. Identify the sample as biased or unbiased and describe its type

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2