math help needed asap

Question

The equation P=490n−10780 represents a computer manufacturer's profit P when n computers are sold.

Find the value of n where P=15190 Write your answer as an Ordered Pair: 

Answer 1

You can simply plug in the value for P that they give you into the equation and solve for n.

P = 490n - 10780

They tell us P = 15190

So:

15190 = 490n - 10780

From here solve for n by adding 10780 to both sides first

25970 = 490n

And then dividing both sides by 490

53 = n.

So the company must sell 53 computers to make a profit of 15190.