Suppose a video store charges nonmembers $4 to rent each video. A store membership costs $21 and members pay only $2.50 to rent each video. For what number of videos is the cost the same?

14 videos

Step-by-step explanation:

Let x is the number of videos, y is the total cost

Suppose a video store charges nonmembers $4 to rent each video

so, y₁ = 4x   ⇒(1)

If a store membership costs $21 and members pay only $2.50 to rent each video.

So, y₂ = 2.5x + 21   ⇒(2)

For the same cost :

∴ y₁ = y₂

4x = 2.5x + 21   ⇒ combine like terms

4x - 2.5x = 21

1.5x = 21

x =

The number of videos at which the cost is the same 14 videos

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.

step-by-step explanation: