Answer:

Step-by-step explanation:

Could you give the question more clear?
1) total-spent=left over to spend on brother
1.1)20-3.5=16.5
2)left over to spend on brother ÷ price of baseball cards
2.2) 16.5 ÷ 1.25 =13.2
3) you can buy 13 cards and have 20 cents left
Answer:
This is GP with the first term of 512 and common ratio of 1/2
<u>The formula for nth term is:</u>
<u>The number of teams after the 4th round:</u>
- a₄ = 512*(1/2)⁴ = 32 teams
<u>Number of rounds to determine the champion:</u>
- 1 = 512*(1/2)ⁿ
- 2⁰ = 2⁹*2⁻ⁿ
- 0 = 9 - n
- n = 9 rounds
Answer: your answer is 536.2 hope it helps
Step-by-step explanation: