They both are 180 degrees.
One possible difference is that a straight angle is just a single angle measuring 180 degrees, while a linear pair supplementary angle are pairs of adjacent angles that add up to 180 degrees.
28/24 = 1.1(6)ft
Each section of the word should be 1.1(6)feet.
The box of 10 is a better buy because each bar of soap is worth $1.08 instead of $1.26 that you would pay for the box of 14.
Y is 13 when you solve the problem