To find the mean, you need to find the average. The equation that I used was 61(1)+64(3)+67(5)+70(6)+73(5) and then divided that total by the total number of 20.
The answer would be D) 68.5
<u>To find the area of a complex shape</u>:
⇒ must cut the whole shape into a simpler shape
- square with side lengths of 4 in
- 2 triangles with a base of 4 in. and a height of 8 in.
- 2 triangles with a base of 4 in. and a height of 10 in.
<u>Let's calculate:</u>
- Area of 2 triangles with a base of 4 in. and a height of 8 in.

- 2 triangles with a base of 4 in. and a height of 10 in.

- square with side lengths of 4 in

<u>Total Area</u>: 32 + 40 + 16 = 88 in²
<u>Answer: 88 in²</u>
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Hope that helps!
One equation is a multiple of the other, so you have an infinite solution set and for every x you pick you can find a matching y to fulfill both equations

this forms a line and any of its points is valid in the equation
I think its 40.7 but not too sure