True or false: f(x) is a function.
4
8
1
12
f(x)

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

which  best  describes the transformation from the graph of  f(x) =  x2  to the graph of  f(x) = (x  – 3)2  – 1?   left 3 units, down 1 unitleft 3 units, up 1 unitright 3 units, down 1 unit  right 3 units, up 1 unit

Sum is 17 and their difference is 3