Answer:

Step-by-step explanation:
we have
<em>The equation of the first line</em>
------> equation A
<em>The equation of the second line</em>
------> equation B
Solve the system of equations by elimination
Multiply equation A by -4 both sides
--------> equation C
Adds equation B and equation C

<em>Find the value of x</em>
substitute the value of y


Multiply by 3 both sides


therefore
The solution to the system of equations is the point 
Answer:
x = 30
Step-by-step explanation:
4x + 2x = 180
6x = 180
x = 30
Answer:
tax=$0.18
Step-by-step explanation:
total cost = $2.18
Answer:
76
Step-by-step explanation:
Normally you would do 76 * 0.25
For this I did 19 / 0.25
I hope this helps!