The answer is bla bla blahhh
D. You can substitute the ordered pair in the equation
There is a set A representing some elements in it. 4 is a part of the set which is represented as 4 ⊂ A.So 4 being an element from A can also be treated as a set and is called subset of A.
60 because if w = 20, then you do 20 x 3 and 20 x 3 = 60
Let y represent the total weight of mulch and x represent the number of bags of mulch, then
y = kx.
Rate of change (k) = y/x. i.e. the weight of mulch divided by the number of bags.
