Step-by-step explanation:
x=y
y=1/z^3
Now,
for equation,
x=y=1/z^3
Centimeters, probably, which (for small things) isn't accurate.
If you are trying to solve for x, then
4x+5<=13
subtract both sides by 5
4x<=8
then divide both sides by 4
x<=2
3% interest on 5,000 = 150
275 (the total amount wanted) - 150 (from initial investment)= 125
x (5%) =125
x (0.05)= 125
x/0.05)= 125/0.05
x=2500
you need to invest 2500 at 5% to get the additional 125
125 plus 150= 275
The answer is -7
no to sure though