A: 100 cm³
This is because the others can be multiplied by something 3 times to get it, but A can not.
vertex (1,-1) axis of symmetry is x=1, domain all real numbers (i think neg ys) range y is less equal than -1, y increases as x less 0 bug IMO x decreases
(1/3)/(5)= 1/3 * 1/5 = 1/15 of a chocolate bar each friend gets





Combining like terms, we have


