Answer:
The expression x-0.3x represents the total cost of Minecraft Dungeons.
Step-by-step explanation:
Given that:
Percentage of Minecraft sale = 30% off
Cost of Minecraft Dungeons = x
Amount of discount on Minecraft Dungeons = 30% of x
Amount of discount = 
Amount of discount = 0.3x
Total cost of Minecraft Dungeons = Total cost - Discount
Total cost of Minecraft Dungeons = x - 0.3x
Hence,
The expression x-0.3x represents the total cost of Minecraft Dungeons.
I'm not going to do the entire question, but I'll do the first part.
For the first part, you have to set up an inequality. Use context clues, such as
no more than (the one used in this sentence) to figure out what the symbol should be for the inequality.
In this case, because it is NO MORE THAN 6400, it would be:
6400

250r + 475p
where r represents the # refrigerators, and p represents the # pianos
Now that you have the equation, make the graph, then for the 3rd part, plug in 12 and 8 to r and p to see if it keeps the inequality true.
Hope this helps! :)
Answer:
D: Each distribution has a different mean and a different standard deviation.
Step-by-step explanation:
4:1.
56,000÷2 = 28,000
14,000÷2 = 7,000
28,000/7,000 = 28/7
28 ÷ 7 = 4
---- -----
7 ÷7 = 1
4:1
Hope this helps!