Answer:

Step-by-step explanation:
I did it on paper

$12 + $12 + $13 + $13 + $13 + $17 + $17 + $17 + $17 + $17 = 148
148 ÷ 10 = 14.8
$14.80 is the median amount the ten friends had to pay.
Answer:
-9m - 4 + 2m = -9 - 7m + 5
-7m - 4 = -7m - 4
-7m + 7m = -4 + 4
0 = 0
This is an identity solution because the same number equals the same number. That means there's an infinite set of solutions.
Answer:
41
Step-by-step explanation:
once you put the numbers in numerical order, 11 30 41 62 99, the median (middle number) is 41