The table shows the age of the swim team. The mean age is 10

The first one.

Step-by-step explanation:

The first answer describes the mean, which is correct.

The second answer is the mode, which is wrong.

The third answer is the median, which is also not what you're looking for.

So you're left with the first answer.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)