N is the number of the Tshirt
c is the cost
the relationship between the cost and the number of the Tshirt is:
12n+3=c
so if 1 is the number of the tshirt so the cost is
12.1+3=12+3=15
if n=2 c=12.2+3=24+3=27
and etc.....
Answer: Add the two equations together to eliminate y
Step-by-step explanation:
X+y=3
4x-y=7
I would use elimination since one equation has +y and one equation has -y
Add the two equations together
X+y=3
4x-y=7
-------------------
5x = 10
10:14, 15:21, 20,28
All you need to do when finding equal ratios is multiply both sides by the same number, In this case you could multiply both sides by 2 and get 10:14 or multiply both sides by 10 and get 50:70. The concept is quite easy.
Hope this helps
Answer: 88
Step-by-step explanation: