How do I convert y=xsquared-4x+6 to vertex form?

On a piece of paper, graph . then determine which answer choice matches the graph you drew

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?