The model shows 5 groups of 3. Because there are 3 bars in 5 groups. I hope this helped!!
I would solve this by using elimination, because you have opposite coefficients, (7x and -7x)<span />
7 groups because you need to find a number that 14 and 21 both go into. 7 works because 7*2 is 14 and 7*3 is 21 so 7 is the answer.
Answer:$112
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
it fails the vertical line test