First find the domain(the set of all first coordinates in a function) by finding where the equation(a mathematical statement that says two expressions have the same value; any number sentence with an = sign) is defined.
After that you should know what to do. I don't know how to work this problem cuz i'm barely in 9 grade. But somehow, I know this.
(−∞,∞)
{x|x∈R}
If this helped, please let me know and give me brainliest, please!!
If this is incorrect, please let me know so I can fix it!
A) y - 8= -2/3 (x + 3)
B) y + 1 = 4 (x - 5)
C) y - 8 = -3/7 (x - 4)
D) y - 7 = 2/3 (x - 5)
E) y + 5 = -5/3 (x + 3)
We will see that the price of the bike helmet without the tax is $50
<h3>
How to find the original price?</h3>
Let's define P as the original price, this is the 100%.
We know that a tax rate of the 9% is equal to $4.50, then we can write two equations:
100% = P
9% = $4.50
We can take the quotient between these two equations and solve that for P, we will get:
(100%/9%)*$4.50 = P = $50
So the price of the helmet, without tax, is $50.
If you want to learn more about taxes, you can read:
brainly.com/question/14345924
