Greetings!
An item at full price is 100%, or by using the percentage formula: 
If something is at 30% off, that means it is 70% of the original price (because minus the percentage from the 100%)
So by substituting the numbers into the percentage formula you end up with:
which is 0.7
So your answer would be D, 0.7!
Hope this helps!
Answer:
the first two answers are perpendicular
Answer:
Naw I can't help ya I gotta find my notes
Answer:
The sheet steel costed $22.41 per square meter
Step-by-step explanation: