For question 6, begin by doing (that's how much it would cost for 5 gig tickets separately). Since the batch of 5 costs $80.00, they will save .

I'd go for option D for question 8...

Question 9... So the problem here is (it's easier to see it in tiered fractions. First, I'd multiply up by the 6 to acquire......and then multiply up by the to get...Then finally dividing through by 9 gives .