Bill stood outside the mall and asked every fourth person to enter the mall for their favorite sport. there were four choices: football, baseball, basketball, and other. bill surveyed a total of 49 people. of those surveyed, 13 said football is their favorite, 11 said baseball is their favorite, 13 said basketball is their favorite, and 12 said other. is there a sampling bias in the situation above? a. yes, people who go to the mall probably like football. b. no, there is no relationship between sports and going to the mall. c. there is not enough information. d. yes, people who go to the mall probably like baseball.

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

answer is c

step-by-step explanation:

81/12=324/x

x=48