Answer:
81x + 4913x + 676x + 10x + 12 / 9
X=5692 /9
X=632.444
y = -2x + 3....slope = -2, y int = 3
2x + 4y = 8
4y = -2x + 8
y = -1/2x + 2....slope is -1/2, y int is 2
this is graph C
125 cups in 120 minutes (because 1000 oz/8 = 125 cups and 2 hrs is 120 minutes)

now reduce the fraction by dividing the numerator and denominator by 5 = (optional)

So 24n = 25 Divide both sides by 24
n= 1 1/24 cups per minute
Answer: They're capitals of cities.
Step-by-step explanation:
You could continue the set with Madrid, Bucharest, Sofia, Luxembourg, Berlin, Rome, Athens... and so on.
Equation 1) 10x + 2y = 30
Equation 2) 4x + y = 4
Multiply all of equation 2 by 2.
2) 2(4x + y = 4)
2) 8x + 2y = 8
1) 10x + 2y = 30
Subtract equations from each other.
-2x = -22
Divide both sides by -2.
x = -22/-2
x = 11
B) x = 11
~Hope I helped!~