First you want to divide $90 by four. You want to take the answer and divide it by 2.
$90 / 4 = $22.5
22.5 / 2 = Mrs. Jackson saved $11.25.
Answer: B) increasing for x < -4/3 and x > 4/3
decreasing for -4/3 < x < 4/3
<u>Step-by-step explanation:</u>
Graph the equation and follow the curve from left to right. If you are going up, it is increasing. If you are going down, it is decreasing.
Refer to the image below. Red is increasing. Blue is decreasing.
The vertices are at: x = -4/3 and x = 4/3
The frequency refers to how many times a test scores within that particular range.
To find this answer, we must divide the number of scores we are interested in by the number of total scores, aka (n/500).
We are interested in the range of 70-89, and we notice there are 2 boxes included in this range: 70-79 and 80-89.
In the 70-79 range we see that there are 172 out of 500 scores.
In the 80-89 range we see that there are 105 out of 500 scores.
If you add these scores, you are given 277 out of 500 scores, aka (277/500), which gives us 0.554
You were on the right track with the answer you chose but you just forgot to include the 80-89 range. Hope this helps!
The surface area of a rectangular prism is:
A=2(xy+xz+yz) where x,y, and z are the dimensions, in this case:
A=2(312*114+312*2+114*2)
A=2(35568+624+228)
A=2(36420)
A=72840 ft^2
