You can put this solution on YOUR website! f(x)= 4.7x + 1.6 [Set the equation equal to zero]
4.7x + 1.6=0 [Solve for x]
4.7x + 1.6-1.6=0-1.6
4.7x = -1.6
4.7x/4.7 = -1.6/4.7
x=-1.6/4.7
x= -0.3404255
.
Check by plugging (x= -0.3404255) back into the original equation. You should end up with zero (or close to zero)]