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Answer:</h2>
<u>The answer is </u><u>6x³ - 72x² +288 -384</u>
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A weight lifter can bench press 189 kg. How many milligrams (mg) is this?
Answer: We know that:

We are given, that a weight lifter can bench press 189 kg
Therefore, a weight lifter can bench press:



Therefore,
is equal to the 
2300 you mover the decimal over 3 spaces
The answer is B 803.8cm^2
A slope of 3 means the gradient is 3 so we get y=3x+c as derived from the linear formula. we then sub in x=2 and y=-0.5. this gives us c=-6.5.
The equation would be y=3x-6.5
I think this is right.