F(2) means that you are plugging in 2 for x, while f(x)=2 means that the equation equals 2 (y=2) at a certain x value.
8 are left handed bc 20% of its 40 is 0.2×40 =8
<h3>we can make the below formulas with this information:</h3>

<h3>hope it helped you :-)</h3>
43.9 + n = 49.65
43.9-43.9 + n = 49.65 -43.9
n = 5.75