According to the number line, which statement must be true? a) a < 0 b) b > 10 c) c < 15 d) d > 15

The right answer is option d.

Step-by-step explanation:

As you know, in the number line we are looking at the roots of the numbers, and as you know; (√A)^2 = A, so using this, we can analyze each option:

a) A can not be less than zero, because √A is bigger than zero.

b) we can see that √B is smaller than 3, and 3^2 = 9, so B must be smaller than 9, and then, smaller than 10.

c) We can see that √C is almost equal to 4, and 4^2 = 16, so most likely, C is bigger than 15, so this is discarded.

d) we can see that √D is bigger than 4, and using the same reasoning as before, we can see that D is bigger than 16, and 16 is bigger than 15, so D > 15 is correct.

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.

b

step-by-step explanation: