103 aprox , see , for two quest. the answer key shows the wrong answer , for question id , 2909 it should be at most 99 left shoes and for quest. id . 2928 it should be f"(x) = 3 for x in (2,4) .
What do you think about the ecotrix question about measuring in decades instead of years? If we are dividing the variable by 10 then shouldn't we multiply the coefficient by 10?
I think we need to mention the one we think is correct. Which answers are you objecting to? I have objected to 3 and am thinking of objecting to 1 more.