Three ordered pairs would be
x y
0, -15
1, -12
2, -9
ect...
Answer:
$8.6
Step-by-step explanation:
The total tax is 8 dollars and 60 cents
The value of x is 
and 
Step-by-step explanation:
The equation is 
Subtracting by 
on both sides,
Taking LCM,
Multiplying by 3x on both sides,
Dividing by (-) on both sides,
Using quadratic formula, we can solve for x.
Taking out common term 2, we get,
Thus, the value of x is and
Use the equation 459/x=85/100. then you cross multiply 459 and 100 to get 45900. after that you divide 45900 by 85 to get x=540
Answer:
They say that the sum of the two numbers (x and y) is 64, so we can write our first equation by adding them and setting that sum equal to 64:
x + y = 64
The question also tells us that their difference is 14. Similarly to before, we'll just subtract the two numbers and set that difference equal to 14:
x - y = 14
Now from here, you know how to continue with substitution to find the values for x and y. Just remember when you get a word problem to break it down and look for key words like sum, difference, or product, and from there you'll be able to build your system of equations.
