Let the number of hours be x
Assume x > 1
Total cost = 30 + 20(x -1) = 30 + 20x - 20 = 10 + 20x
One way (among several) would be to add 700 and 300 in your head, and then add 44 and 4, also in your head, and then adding together these two sums.
700+300=?
44 + 4 = ?
The answer is easy just divide the product of 22 and 27
Answer:
225°
Step-by-step explanation:
π radians is 180°, so ...
(5/4)·(π radians) = (5/4)·(180°) = 225°
So they get $2 on day 0, $2 on day 2, $3 on day 4, $5 on day 5, $2 on day 6, $1 on day 7, $2 on day 8, $4 on day 10, $1 on day 11, $2 on day 12 and $1 on day 15.
$2 appears 5 times
$1 appears 3 times
$4 appears once and $5 appears once
The median would be ($2*5 + $1*3 + $4 + $5)/(5+3+1+1) = $22/10 = $2.2
The range of the allowances is highest - lowest = $5-$1 = $4
Edit: It might also have a range of $5 and a median of $1.37 because the lowest it goes to is $0 on some days though. Try both.
