Answer:
all work is shown and pictured
A fact family is basically just different equations with the same numbers getting the same/different numbers as answers you might say...
this will make more sense:
5x8=40
8x5=40
40/8=5
40/5=8
let's plug the value of x and y as 5 and 4 respectively to find the value of given expression :
6.74
7.69
5.92
6.68
i listed the unit prices in order and the lowest unit price is for the 10 oz one