N= the # of books
So you're trying to find n and you have the cost for the printed books, which is 15,000, so you would set up your equation like this:
15,000=500+10n
Subtract 500 from each side
14850=10n
Divide by 10
n=1,485 books are printed
we are given
Mark clean his father's office in 30 minutes
so, the amount of work done by Mark in 1 minute is 
younger sister Lynn can clean the office in 40 minutes
so, the amount of work done by younger sister Lynn in 1 minute is 
total work done by them in 1 minute is 
now, we can simplify it



total time taken to complete same work is
........Answer
It is given in the question that,
You may someday purchase a house that has 2500 square feet of living space.
And we need to convert square feet to square meters .

Therefore,

Squaring both sides

Therefore,

The ordered pair (-1, 6) is the solution to the system of equations.
Step-by-step explanation:
Given equations are;
3x+2y=9 Eqn 1
y=4x+10 Eqn 2
Putting value of y from Eqn 2 in Eqn 1

Dividing both sides by 11

Putting x=-1 in Eqn 2

Solution: (-1, 6)
The ordered pair (-1, 6) is the solution to the system of equations.