Using the numbers 1, 3, 4 and 6 exactly once, how do you get 9, 10 and 11?

Of four points are collinear, they are also coplanar

Need on this one asap im almost done with this subject

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?