F(x)=5-3x³
f'(x)=-9x²
f'(3)=-81
y+76= -81(x-3)
y+76=-81x+243
y=-81x+167
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Answer:
<h3>The number is 12</h3>
Step-by-step explanation:
Let the number be x
Half a number is written as 1/2x
So we have
Four times the sum of half a number and 6 is 48 is written as

Divide both sides by 2
That's

We have the final answer as
<h3>x = 12</h3>
Hope this helps you