3x - 50 = -20
Add 50 to both sides
3x = 30
x = 10
The number is 10
23 over 21 is the right answer
23
----
21
Answer:337.5 miles
Step-by-step explanation:
Find the unit rate 135/6 = 22.5/1
He can drive 22.5 miles on 1 gallon of gas
Then multiply by 15
22.5x15= 337.5
Answer:
3
Step-by-step explanation:
3 is a function because of the way associated with the second set
