Let
x--------> amount of starting rocks George had
we know that
\(\frac{1}{2}(x+5)=36\) ------> equation that could be used to determine how many rocks George started with
Solve for x
\(\frac{1}{2}(x+5)=36\)
Multiply by \(2\) both sides
\((x+5)=72\)
Subtract \(5\) both sides
\((x+5)-5=72-5\)
\(x=67\ rocks\)
therefore
the answer Part a) is
The equation that could be used to determine how many rocks George started with is \(\frac{1}{2}(x+5)=36\)
the answer Part b) is
\(67\ rocks\)
