You have to choose

members from the group of

people. So there are

ways to do it.
Answer:

Step-by-step explanation:
Let
x -----> the number of days
y ----> the number of minutes Yuson has left
we know that
The linear equation in slope intercept form is equal to

where
m is the slope
b is the y-coordinate of the y-intercept (initial value)
In this problem we have
The slope is equal to
----> is negative because is a decreasing function
----> initial value
substitute the values

Erm what’s your question?
The expression is 1/2 × (6+3) ÷7
1/2 × (6+3) ÷7
1/2 × 9 ÷7
4.5 ÷7
0.64285714
*Last 6 digits are repeating decimals
Hope this was helpful :D