Answer:
x = 15
Step-by-step explanation:
75 + 10x = 225
subtract 75 from both sides
10x = 150
divide both sides by 10
x = 15
4280 because 75+5+4200= 4280
There were 6.4 cups of concentrate in the batch of orange juice.
If y is 7, x is 2. If y is 9, x is 4. Therefore the domain is {2,4}