Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form: (3,2)
Equation form:
x = 3
y = 2
50% because you first subtract the original price from the new price so 126-84 equals 42 then you divide that by the original price 84 which will give you .5 which turns to 50%

Answer : He spends 2 hours doing paperwork each day.
Hope this helps. - M
X > -2....................
The inverse will be 2x+3/4 or D in your picture