It burned down 20mm in 20 minutes. So the height so the change in height of the candle per minute in -1 mm
What I would do is start with the price of the dessert and the sales tax $3.85+ $1.15= $5. I started with this because when you add the cents they equal a dollar which makes it easier to continue.
Then I would add the 2.75. This would be 7.75.
Then add 7.75 + 8.50. To simplify this, you can add 7 + 8, then .75+ .50
Which would equal 15 + 1.25 + 16.25
115% is the same as 1.15
some number = x
115% of some number is 120
1.15 of x is 120
1.15 * x = 120

x = 104.3478
x ≈ 104.3
Hope this helps! :)
Answer:
b
Step-by-step explanation:
75-30=45
6 is the amount that it cost for each guest well 6x7=42 therefore milo can only invite up to 7 guests to his party