Answer:
A.
Step-by-step explanation:
Answer:
3x=12
Step-by-step explanation:
3 times X with x being 4 making it 12 so X=4 and 3x=12
Answer:
is equivalent to the inequality 
Step-by-step explanation:
Given inequality : 
We are supposed to find Which of the following is equivalent to the inequality


Multiply both sides by 10


is equivalent to the inequality 
So, Option B is true
B) 
X - $5 bills
y - $10 bills
x + y = 12
y = 5x
x + (5x) = 12
6x = 12
x = 2
y = 5(2)
y = 10
10 $10 bills and 2 $5 bills