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Taya2010 [7]
3 years ago
12

A new video game is expected to sell 130 copies the first hour at a local game store. After that, the sales will follow the func

tion s(x) = 9(x − 1) where x is the number of hours. What is the function that shows total sales, including the first hour?
A) s(x) = 130 + 9(x − 1)
B) s(x) = 9(x − 1) − 130
C) s(x) = 130x − 9
D) s(x) = 130 − 9(x − 1)
Mathematics
2 answers:
lapo4ka [179]3 years ago
8 0

Answer:

s(x) = 130 + 9(x-1)

Step-by-step explanation:

Video games sold in first hour = 130

After the first hour the sales will follow the function:

s(x) = 9(x-1)

Where x is the number of hours.

So, in x hours hours video games sold = 9(x-1)

So, total video games sold (including first hour) = 130+9(x-1)

Thus the function that shows total sales, including the first hour:

s(x) = 130 + 9(x-1)

Hence Option A is correct : s(x) = 130 + 9(x-1)

suter [353]3 years ago
4 0
The answer is A I believe. 

At hour 1, the equation must equal 130,

therefore s(1) = 9(1-1) + 130
                s(1) = 9(0) + 130
                s(1) = 130

then so on when 
s(2) = 9(2-1) + 130
s(2) = 139

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