I used calculus to solve the pencil one. 
Anyone else?
If applying to top colleges, what would be the maximum retake score?
I did absolutely no preparation and I think that was a huge mistake. I left 6 blank and I probably got 5 more wrong. What score is good enough for the ivies?
what was the pencil one and the cost one, i forgot both
@baller55 Think the pencil one was the cost one. It gave a function for the expenses or whatever and you had to find when it was lowest.
I’m sure anything over 750 is fine for any school.
@dopefresh did u do -b/2a?
The question about spheres was extremely ambiguous I felt. Because if you consider the sphere to be a solid object, then it can intersect to form a point, a weird irregular shape, and a sphere (if one is inside the other). However, if it said that the sphere was hollow, then it would intersect to either form a circle or a point. I can’t remember it saying it was hollow, but if you all put it then it’s probably right.
x=-k
was the absolute value question 6.something
c?
it’s two (hollow) sphere surfaces so if they just touch eachother, there’s a point of intersection, if one goes partially through the other, it forms a circle where they intersect. since diameters are different, there’s no way all points on the surfaces would overlap (which is the only way a sphere would be formed) @goodlife12 (this is the one you wanted, i tagged you instead of someone else for the other problem)
Frigidcold, what did you get for the e^cos(2t) question? Was it 6. something? I remember one value was like 6.8 and one was 6.23, but can’t remember which one I put. Also surprised I managed to get the orbital distance wrong, seems like I used the right method atleast
I got x=k
Did anyone get b/a for the perpendicular line question?
@Frigidcold What did you get for the cost one?
I actually got C for the last few but I probably got them wrong haha
a/b i believe
@goldennuggets it said sphere surfaces, so they’re hollow (i only though of that after, so i got it wrong on the test) 
The one where it said that the area of the triangle was 2 and an intercept was (0,4) - find the slope of line m
@sdw8253 Yes -b/2a ist he vertex formula.