Answer=150 seats were on the plane total
54 81
____=____
100 x
cross multiply
54x=8100
x=150 seats
This is a really simple problem once you understand how to solve it, and that's what I'm going to show you! :)
When calculating the mean (average) of multiple numbers, your first step is to add the numbers together.
190,258.50 + 152,698.00 + 122,753.00 + 220,523.00 + <span>231,951.00 = 918,183.50
Then you take the sum of your numbers, and divide the sum by the amount of numbers added, which in your case, is 5.
918,183.50/5 = 183,636.70
The average of these numbers is $183,636.70
Feel free to message me or comment with any questions you have about this.</span>
Answer:
C and $320.45
Step-by-step explanation:
I think it's C because this is the full function :

And to get the b part of the question i just put the number in

I'm not a 100% sure, sorry if it's wrong
For an arithmetic sequence, the nth term = the first term + d(n-1), d is the difference between two neighboring numbers, in this case, d is 5
the 20th term=-4+5(20-1)=91