The answer is 6.5 - you add 6 and 7 together and then you divide them by two
Y = 12x......y = 12(4).....y = 48.....so she pays $ 48 for the old brand when buying 4 boxes
y = 8x...y = 8(4)......y = 32...so she pays $ 32 for the brand she changed to, when buying 4 boxes
so the super saving brand would save her (48 - 32) = $ 16 per month
William payed $8.55 at the discount price
Answer:
12.
Step-by-step explanation:

Substitute this equation with a=3 and b=24:



It has to be B is the one that has to ne correct