Answer:
$4.67
Step-by-step explanation:
First, add the price with the sales tax:
19(1.07)
= 20.33
To find how much she got back in change, subtract 20.33 from 25
25 - 20.33
= 4.67
So, she got $4.67 in change
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
I can't factor that.
Is the equation input correctly?
