You have a 30% chance of getting a blue marble. <span />
F(x) = 3x²-6x+2
f(2) = ?
f(2) = 3.2²-6.2+2
f(2) = 3.4-12+2
f(2) = 12-12+2
f(2) = 2
A) 2✔
Given:
Schaum's earnings in a month = 
His wife's earnings in a month = 
Where x is the number of working days in a month.
To find:
The total earnings in a month.
Solution:
We know that,
Total earnings = Schaum earnings + His wife's earnings in a month



Therefore, the correct option is A.
Example:
38 rounds to 40
6 rounds to 10
10+40 = 50
1. Arc KL = 23
2. Arc LON = 203
3. Arc OM = 113
4. Arc KNL = 180
5. 157
hope this helps !