Variable costs are expenses that change from one period to the next. since this question is asking what is not a variable cost the answer would be rent because the cost of rent does not change from one period to the next.
1=3
2=4
1+2=180; 2+3=180; 3+4=180; 4+1=180
180=94+n
n=86
86=x+64
x=22
94=y-37
y=131
We can do anything to an equation as long as we do it to both sides
given:
square both sides
minus 3 from both sides
multiply both sides by 6
minus 4
square both sides
do for -4+6 and -4-6 (2 and -10)
and
minus 3
and
test for extraneous roots
x=97 doesn't work
the answer is x=1
Simple...this is a discount problem.
To find the answer to this problem you can find the net price percentage of the shoes by doing...
100%-33%=67%
Now...multiply the original price by the net price percentage...
$42*0.67=$28.14
Thus, the shoes after the discount cost, $28.14