How can i get more points on here, and by that i mean where do i go to answer questions?

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

What is the value of x in the diagram below?

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.