First thought, ooh, algebra! Right! So, you’ve got to work out – I
can graph this scale, if x is squared plus 3, you are going to have a
plus – you’re going to have it going plus 3 every time but it’s got to
be squared as well. So you’re going to have to take 3 off, and then
you’ve got to have a number that you can get a square root from. This
is after now reading about algebra. Before I would have just thought,
oh, well it must start with a 3. And then I’ve thought, no, hang on,
how am I going to do this? I just didn’t know. And then I thought, oh
x, in the top row in table 1, you’ve got 1, then I felt, well ‘x squared’,
1 times 1 is 1 plus 3 is 4 (pointing to it) . . . And then the next number
along in table 1, x. I’ve thought if x is 5, I’ve not squared it, I’ve just
added 3. And the next one along in table 1 is x is 10, and then the
answer below is 13. I’ve just added 3, I’ve just guessed, panicked and
just gone for number 1 [option A] which was table 1.