The profit p (in dollars) from selling x calculations is p = 25x - (10x+250) how many calculators are sold when the profit is 425

The profit function is given by:

p=25x - (10x+250)

the number of unit sold if the profit is 425

here we solve for x when p (x) = 425

substituting the values in the equation we get:

425=25x - (10x+250)

425=25x-10x-250

solving for x we get:

425=15x-250

425+250=15x

675=15x

x=675/15

x=45

thus the number of units sold is 45