Answer:
17
Step-by-step explanation:
I got this right on a test i did 4 days ago
X + (2 + x) + (4 + x) = 60
3x + 6 = 60
3x = 54
x = 18
x + 2 = 20
x + 4 = 22
Their ages are 18, 20, 22
For number 3.it would be 87/200 and 4. Would be 713/500
Most likely liters, but I'm not sure.
The average rate for the given function is -1.