Waterworld properties to rewrite each expression as an expression that does not use parentheses (b + 3) + 6

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

Find the amplitude of a sinusoidal function that models this temperature variation

The graph is supposed to show f(x) = 3 sin (x/4+1) - 1/2. which of the following are correctly represented in the graph? select two of the following that apply.