Section 2.5 15 & 16 [ATTACH=full]449[/ATTACH] Question 15 Possible Rational Zeros: ±1, ± 2 Graph given for 15 proves this to be true. Question 16 Possible Rational Zeros: ±1, ±2, ±4, ± 8, ± 16 Graph given for 16 proves this to be true.