Final answer:
The correct equations to represent Chad and Alison's purchases are 9 + 5x = 64 for Chad and 4 + 6y = 76 for Alison.
Step-by-step explanation:
Chad buys a pack of white shirts for $9 and 5 graphic shirts for $x each. To represent this, we can write the equation as 9 + 5x = 64.
Alison buys a pack of 'Thank You' cards for $4 and 6 pairs of leggings for $y each. To represent this, we can write the equation as 4 + 6y = 76.
Therefore, the correct equations to represent Chad and Alison's purchases are:
Chad: 9 + 5x = 64
Alison: 4 + 6y = 76