Your answer is 4
Hope this helps.
Okay, so we know that n is the number of bars we want to buy. The sum of the numbers of bars we buy is $1.29n where n is the number of bars we buy. Its the same as saying:
$1.29 + $2.58 + $3.87... $1.29n
↑ ↑ ↑ <span> ↑</span>
Bar 1 Bar 2 Bar 3... Bar n
So as you can see, our function is:
C(n) = $1.29n
X is greater than or equal to 5 and less than or equal to 10.
Now x is given, which is 9 and y = 20(9)
y = 180.
Is y > 80?
If yes then z = y+ 20.
If no then z = y - 10.
The solution we got for y is 180 and is greater than 80, so above statement is true.
z = y + 20
z = 180 + 20
z = 200
Answer: 200
Point A would be zero; Point B, the end of the 1/2-hour time interval, would be 1/2 (representing 1/2 hour). Then Amy needs to subdivide the interval A to B into three equal time intervals and to determine the length of each of these subintervals.
I would begin with 1/2 and divide that by 3:
1
--
2
====
3
--
1
Inverting the fraction in the denom. and multiplying, we get
1 1 1
-- * ---- = -----
2 3 6
So Amy will spend 1/6 th of an hour, or 10 minutes, on each chore.
Note that 3 times 1/6 comes out to 1/2 (hour), which is were we started.
