Answer:
Option b
or 
Step-by-step explanation:
The absolute value is a function that transforms any value x into a positive number.
Therefore, for the function
x> 0 for all real numbers.
Then the equation:
has two cases
if
(i)
if
(ii)
We solve the case (i)

We solve the case (ii)

Then the solution is:
or 
Answer:
the item would cost $9000
Answer:

Step-by-step explanation:
Hope this helps! Have a great day ahead. Happy halloween :) Stay Safe <33
2x+x-7+3x-20=87cm
6x-27=87
6x=114
x=19
Therefore the sides are:12cm, 38cm, and 37cm
A radius of 0.75 would be rational because the decimal ends and does not repeat itself.