**Answer:**

4

**Step-by-step explanation:**

To find the median (middle) of the data set, first arrange the numbers in order: 0, 2, 3, 4, 7, 7, 12. Now find the middle number: 4.

Hope it helps!

**Answer:**

cos(x)+1 or cos x + 1

**Step-by-step explanation:**

The wave starts at y=2 this means it is a cosine function, then the first positive x-intercept is at about (pi, 0) which is about 3, this leads to cos x + 1 as the answer.

**Answer:**

180

**Step-by-step explanation:**

12x15=180