Hello!
We can write this as a proportion below.

As you can see, 4 is eight times 0.5. Therefore, we can multiply eighteen by eight to get our answer.
18(8)=144
Just to check, we can cross multiply and divide.
72/0.5=144
Therefore, our answer is
144 feet.
I hope this helps!
The total cost of the item with sales tax will be $ 381.6.
<h3>What is Algebra?</h3>
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
An item cost $360 before tax and the sale tax is 21.60.
Then the total cost of the item with sales tax will be
Total cost = 360 + 21.6
Total cost = $ 381.6
More about the Algebra link is given below.
brainly.com/question/953809
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Answer:
Last one is one of the answers
Step-by-step explanation:
3(x+4)=-24
= 3x +12=-24
1) add, equal
2) multiply, equal
3) subtract, equal
Well if each set had 12 cards. So 18*12 = 216 :D