How does the graph of g(x)=4⌊x⌋ differ from the graph of f(x)=⌊x⌋?

multiplying by 4 shifts the graph of g(x)=4⌊x⌋ up 4 units.

multiplying by 4 shifts the graph of g(x)=4⌊x⌋ down 4 units.

multiplying by 4 shifts the graph of g(x)=4⌊x⌋ right 4 units.

multiplying by 4 stretches the graph of g(x)=4⌊x⌋ vertically by a factor of 4

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?