(6p-1)(6p+1)
Step-by-step explanation:
Now foil. You would get 36p^2+6p-6p-1 so you cancel out your 6ps and that leaves you with (6p-1)(6p+1)
Answer:
Number of books = 4480.
Step-by-step explanation:
Given that fixed cost = $45920
Given that variable cost = $11.25 per book
Let number of books = x
then cost equation is given by 11.25x + 45920
Given that selling price of 1 book = $21.50
then selling price is given by 21.50x
Now we need to find about how many books must the publisher produce and sell so that the production costs will equal the money from sales.
So let's set both equal
21.50x = 11.25x + 45920
21.50x - 11.25x = 45920
10.25x = 45920
x = 45920/10.25
x = 4480
Hence number of books = 4480.
Answer:
y = 1/2x + 0
You can see the slope is rising by 1 and running (to the right) by 2. This makes the slope, or rate of change, 1/2x.
There aren`t really calculations necessary to find the rate of change, but if you need more explaining please do ask, I`m happy to help
If 9kg costs 12$, then a single kg costs around 1.3$
This is done with a simple proportion
9 : 12 = 1 : X
x = 12/9
x = 1.33