Use demoivre's theorem to find (-sqrt 3+i)^6

Need solving this second acceleration problem.

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?