Answer:
A) 4:5
Step-by-step explanation:
A) 4:5
B) 4:9
C) 5:4
D) 5:9
If there are 4 sixth grade students, you can already cross off D because there is no 4 as an option. There are 5 seventh grade students, you can cross off B because there's no 5. So now it's down to 4:5 or 5:4. Since it wants the ration of sixth to seventh, it's 4 to 5.
Hence, the ratio is 4:5, answer A
Hope this helps :)
<em>Stay Cold, </em>
<em>Brook</em>
Answer:
<em>a ) Increased by 100 %, b ) Increased by 50 %, c ) Decreased by 33 and 1/3 %, d ) Decrease by 50 %, e ) Increased by 200 %, f ) 66 and 2 / 3 %</em>
Step-by-step explanation:
See steps below;
![b ) Percent Increase from 2 - 3 ;\\starting value - 2, end value - 3,\\3 - 2 = Increase by 1,\\1 / 2 - Solution; Increase by 50 percent](https://tex.z-dn.net/?f=b%20%29%20Percent%20Increase%20from%202%20-%203%20%3B%5C%5Cstarting%20value%20-%202%2C%20end%20value%20-%203%2C%5C%5C3%20-%202%20%3D%20Increase%20by%201%2C%5C%5C1%20%2F%202%20-%20Solution%3B%20Increase%20by%2050%20percent)
![c ) Percent Decrease from 3 - 2 ;\\starting value - 3, end value - 2,\\3 - 2 = Increase by 1,\\1 / 3 - Solution; Decrease by 33 and 1 / 3 percent](https://tex.z-dn.net/?f=c%20%29%20Percent%20Decrease%20from%203%20-%202%20%3B%5C%5Cstarting%20value%20-%203%2C%20end%20value%20-%202%2C%5C%5C3%20-%202%20%3D%20Increase%20by%201%2C%5C%5C1%20%2F%203%20-%20Solution%3B%20Decrease%20by%2033%20and%201%20%2F%203%20percent)
![d ) Percent Decrease from 2 - 1 ;\\starting value - 2, end value - 1,\\2 - 1 = Decrease by 1,\\1 / 2 - Solution ; Decrease by 50 percent](https://tex.z-dn.net/?f=d%20%29%20Percent%20Decrease%20from%202%20-%201%20%3B%5C%5Cstarting%20value%20-%202%2C%20end%20value%20-%201%2C%5C%5C2%20-%201%20%3D%20Decrease%20by%201%2C%5C%5C1%20%2F%202%20-%20Solution%20%3B%20Decrease%20by%2050%20percent)
![e ) Percent Increase from 1 - 3 ;\\starting value - 1 , end value - 3,\\3 - 1 = Increase by 2,\\2 / 1 - Solution ; Increase by 200 percent](https://tex.z-dn.net/?f=e%20%29%20Percent%20Increase%20from%201%20-%203%20%3B%5C%5Cstarting%20value%20-%201%20%2C%20end%20value%20-%203%2C%5C%5C3%20-%201%20%3D%20Increase%20by%202%2C%5C%5C2%20%2F%201%20-%20Solution%20%3B%20Increase%20by%20200%20percent)
![f ) Percent Decrease from 3 - 1;\\starting value - 3, end value - 1,\\3 - 1 = Decrease by 2,\\2 / 3 - Solution ; Decrease by 66 and 2 / 3 percent](https://tex.z-dn.net/?f=f%20%29%20Percent%20Decrease%20from%203%20-%201%3B%5C%5Cstarting%20value%20-%203%2C%20end%20value%20-%201%2C%5C%5C3%20-%201%20%3D%20Decrease%20by%202%2C%5C%5C2%20%2F%203%20-%20Solution%20%3B%20Decrease%20by%2066%20and%202%20%2F%203%20percent)
<em>Solution; a ) Increased by 100 %, b ) Increased by 50 %, c ) Decreased by 33 and 1/3 %, d ) Decrease by 50 %, e ) Increased by 200 %, f ) Decrease by 66 and 2 / 3 %</em>
The bottom one since as x increases so does y. the top function doesn't since it's a quadratic. meaning it decreases and hen increases