With this i have no idea what to do and how to find the !

  82.49 percent were at least high school graduates.

Step-by-step explanation:

We have been given that at 1950  x=0

and at 1960  x=10

And following this pattern at 2000 x=50

So, we have coordinates:

(0,34.7) and (50,87.8) for two point form we will find a function:

Using:

Substituting the values in the formula we get:

y=1.062 x+34.7 is the linear function

(b) Now, we need to find the value at x= 1995 which will be equal to 45 according to the pattern followed

Put x=1995 in the function above we get:

y =1.062(45)+34.7

y=82.49 percent were at least high school graduates.

not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.

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

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40