In a survey, 70 out of 84 people from the north prefer professional football over college football. 120 people from the south were asked the same question. In order for favorite type of football and region to be independent, how many people in the south would have to prefer professional football

100 =x

Step-by-step explanation:

We want the same ratio

70       x

=

84          120

Using cross products

70*120 = 84x

Divide each side by 84

70*120/84 = x

100 =x

100 people

Step-by-step explanation:

So if we know that 70 out of 80 prefer pro football in ht north then we could set up a proportion to solve how many will prefer pro football in the south over the total of 120.

  =?

84x = 8400

x= 100  

Now we could say that a 100 people has to prefer professional football .

just put them in order

step-by-step explanation:

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.