✅
<u>Step-by-step </u><u>explanation</u>:-

<u>To </u><u>verify</u>:-

Hence verified.

4:polygon
5:heptagon and trapoziod or parallelogram
Answer:
a+15=x
Step-by-step explanation:
Austin is represented as variable a, and you have 15 more cards.
x is your amount of cards