Slove for x

Use the graph of the sine function y=2sinθ shown below

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0