Step-by-step explanation:
4 bags of bananas for $22.52
=> 2 bags of bananas for $22.52 * 2/4 = $11.26.
Hence it would cost $11.26.
For a you check the unit rate. Every 1 second mika moves, she goes 4.2 meters. From the graph, check 1 on the x axis and then check the y. The y is 3.5, so mika is faster because her unit rate is faster.