y = x - 4
Step-by-step explanation:
If you look at it, you can see that 8 - 4 is 4
12 - 4 = 8
14 - 4 = 10 and
17 - 4 = 13
341
step-by-step explanation:
all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.