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500 books were sold the first day it went on sale. 150 books were sold each day after that. Write an equation to represent the total number of books sold. How many books were sold after 50 days?

Sagot :

Let x represent the number of days after release and y represent the number of books sold.

The first day there were 500 books sold, after that, 150 books were solf each passing day.

This means that for the first day y=500 ann each passing day 150 books were added, the equation is:

y=500+150x

Using this equation you have to calculate the number of books solf after x=50 days.

To do so replace in the equation above:

y=500+150*50

y=8000

After 50 days 8000 books were sold