**Answer:**

48

**Step-by-step explanation:**

24

<u>+24</u>

48

**Answer:**

b. 4

**Step-by-step explanation:**

you divide by 4 for each one, that's how you know

**Answer:**

1 over 5^15

**Step-by-step explanation:**

I am in same class.

**Answer:**

b = ∛16 ≈ 2.520

**Step-by-step explanation:**

The area bounded by y=x^2 and y=b is given by the integral ...

For b = 4,

A(4) = (4/3)4^(3/2) = 32/3

We want to find b such that the area is half that, or ...

A(b) = (1/2)(32/3) = 16/3

So, we're solving the equation ...

16/3 = 4/3b^(3/2)

4 = b^(3/2) . . . . . . . . . . . . . . multiply by 3/4

4^(2/3) = b = ∛16 . . . . . . . . raise to the 3/2 power