**Answer: see answers below**

<u>Step-by-step explanation:</u>

y = A cos (Bx - C) + D

- A is the amplitude
- Period = 2π/B → B = 2π/Period
- Phase shift = C/B
- D is the vertical shift (aka midline)

Given: A = 5/2, B = π/6, C = 0, D = 13/2

1) midline (D) ± amplitude (A) = Max & Min

Max: 13/2 + 5/2 = 18/2 = 9

Min: 13/2 - 5/2 = 8/2 = 4

2) Midline (D) is given as 13/2 = 6.5

3) Period = 2π/B = 2π/(π/6) = 12

4) Formula is given as: y = 5/2 cos (π/6)x + 13/2

5) change the coordinates of y = cos (x) and as follows:

- x-value: add C then divide by B
- y-value: multiply by A then add D

Note that A = 5/2, B = π/6, C = 0, D = 13/2

I’m 99.9999% sure it’s 60

**Answer:**

answer is 9312

97multiple by 96 = 9312

**Step-by-step explanation:**

mark as brainliest ❤

The answer would be -9x^2-x-12

**Answer:**

113.1 ft^3

**Step-by-step explanation:**

Volume of sphere=4/3*pi*r^3

r=6/2=3

V=4/3*pi*3^3

V=4/3*pi*27

V=36pi

V=113.0973

So the volume is about 113.1 ft^3