The point-slope form:

We have:

Substitute:

Answer: C. y - 5 = 3(x + 1)
It's
which gives 5.23 times increase in 10 years, so 523% of oryginal price
Uh do you mean he earned $225 per week?
If yes, then he earned 45 per day.
I'm assuming you mean to list the terms of the expression. Those are mn, -2n, and +8. There are 3 terms there.
don't quote me on this but I'm pretty sure it's H multiplication property of inequality