No, because everything to the right, and not the left, of -1 is shaded.
A. $74.55
because if their are 4 pairs you would do 35x4=140 the half of 140 would be 70. Then they would have to pay tax witch is 6.5% of 70 and that is 4.55 so paying for the shoes and including tax would be 74.55
Answer:
for any point (x, y), that appears in one function, the point (y, x) must appear in the other function. for any point (x, y), that doesn't appear in one function, the point (y, x) must not appear in the other function.
so if you find any point that doesn't meet the above rules, you can prove that the functions are not inverses of each other.
to prove that they are inverses of each other, you need to check all points in the functions, and there is an infinity of them, so instead, you can write f(x) like this:
y = 3x - 5
solve for x:
y + 5 = 3x
x = (y + 5) / 3
swap x and y:
y = (x + 5) / 3
this is the same as g(x) which, therefore the functions are inverse of each other.
