Answer:
77
Step-by-step explanation:
the dog ate half so there is only the other half left and there is 43 cards left
1 half + 1 half = 1 whole so 43 + 43 = 86
86 is the total after he bought 9 new cards
86 - 9 = 77
Each pencil costs 0.72 as you do 4.32 / 6
Answer:
9
Step-by-step explanation:
Cross Multiply: 
Simplify: 4x=36
x=9