Question

can anyone help me change these problems to roster notation from set builder?

c) {x|x is the cube of an integer and -20 ≤ x ≤ 500}

d) {x|x is an integer such that 3x+1=8}

Answer 1

i don't see a and b

Answer 2

c.
{-8,-1,0,1,8,27,64,125,216,343}
these are cubes of -2,1,0,1,2,3,4,5,6,7
cube of -3=-27
cube of 8=512
but they are not within the given.

Answer 3

d.
\[\phi \]