8. Dustin buys packs of trading cards. He reads that half of the packs contain a bonus card. Dustin uses a coin to perform a simulation to estimate how many packs will contain a bonus card if he buys 20 packs. He uses heads to represent a pack with a bonus card. The results of his simulation are shown. H, H, T, H, T, T, T, H, T, H, H, T, T, H, T, H, H, T, H, H How many packs in this simulation did not contain a bonus card