Complete the statements about the key features of the graph of f(x) = x5 – 9x3. as x goes to negative infinity, f(x) goes to infinity, and as x goes to positive infinity, f(x) goes to infinity.

Subsitute to find out
actually, since it is odd degree and positive leading coefient, it goes from bottom left to top right

so as x goes to negative infinty, f(x) goes to negative inifnty
as x goes to positive inifnty, f(x) goes to positive inifnty

40 & 50 in the right corner are the complementary angles as when placed in a sum (added together) they make 90°