I'm leaning towards combination because the order you do the chores does not matter. In permutation the order matters.
Y=15x+8. because if you have 15 dollars per jersey and u dont know how many jerseys you have, the u have x amount of jerseys. and each order is 8 dollars
Area of <span>parallelogram=base * height
so it is 12*9=108 yd²</span>
