Answer:
x = 5
Step-by-step explanation:
RS +ST = RT
2x + 10 + x - 4 = 21
2x + x + 10 - 4 = 21 {Combine like terms}
3x + 6 = 21
Subtract 6 from both sides
3x = 21 - 6
3x = 15
Divide both sides by 3
x = 15/3
x = 5
One 8th of a gallon is 16 Ounces, or a pint.
So he would have 144 ounces, or 9 pints.
I wrote the domain and range in interval notation, not sure if that’s how you’re asked to do it. This is how I was taught to state the domain/range of a graph.