I'm sending you two screenshots of the explanation I hope this helps.
-7n + 9 because the common difference is -7, so you have -7n, and then by plugging in the term numbers and the values, you find out that you need to add 9 to the -7n, so the answer is -7n + 9
Yes
For example: Cut an apple into 9ths and another one into 8ths. Which has a bigger slice?
Answer:
The answer is Parson's Market.
Step-by-step explanation:
First you want to find out how much one pound costs.
For Parson's you take 11.34 and divide it by 6.
11.34 / 6 = 1.89
Then you take how many pounds you are trying to get (7) and multiply it by the price per pound (1.89)
7 * 1.89 = 13.23