Which equation has x = –6 as the solution?
log Subscript x Baseline 36 = 2
log Subscript 3 Baseline (2 x minus 9) = 3
log Subscript 3 Baseline 216 = x
log Subscript 3 Baseline (negative 2 x minus 3) = 2

Blood: [H+] = 0.00000004 pH =

Vinegar: [H+] = 0.0063 pH =