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 function 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)

Question

Mathematics

Kathy Mendez

23 October, 15:47

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 function 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)

+1

Answers (1)

Know the Answer?

Rocco Salas · Answer 1

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