7.1% subtract the final price by the original price to find the increase and then divide the increase by the original price.
Explanation:
Find the increase
3.75−3.50=.25
Then divide the increase by the original amount
.253.50=.0714285
To change to a percent multiply by 100 and round off to significant numbers
# .0714285 = 7. 14285% or 7.1% or just 7%
Answer:
- 220 options, 84 options, 20 options, 1 option
Step-by-step explanation:
<h3>The first dinner</h3>
Combinations of 3 out of 12 items
- 12C3 = 12!/(12-3)!3! = 12!/9!3! = 12*11*10/2*3 = 220
<h3>The second dinner</h3>
Combinations 3 out of remaining 9 items
- 9C3 = 9!/(9 - 3)!3! = 9!/6!3! = 9*8*7/2*3 = 84
<h3>The third dinner</h3>
Combinations of 3 out of remaining 6 items
- 6C3 = 6!/(6 - 3)!3! = 6!/3!3! = 6*5*4/2*3 = 20
<h3>The fourth dinner</h3>
Combinations of 3 out of 3 remaining items
- 3C3 = 3!/(3 - 3)!3! = 3!/0!3! = 1
Just divide 8 nad 9 to get X
What is lesson 5 we have many lessons
