Hello there!
Standard form is used for large or small numbers. It is between 1 and 10 times 10 to the power of something.
In this case, your answer is 1.8 x

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Hope This Helps You!Good Luck :)
Answer:
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Step-by-step explanation:
If the original price is x and you deduct 3, you'l have x - 3.
If you buy 4 of them, you multiply that price by 4, giving you 4(x - 3).
Then, if that value is equal to 27, you get 4(x - 3) = 27
The half of 3/4 is 0.375, or 3/8. All you have to do is multiply 3/4 times 1/2.