Answer:
11.8
Step-by-step explanation:
3(12.4) + 6(11.5) = 37.2 + 69 = 106.2
106.2/9 = 11.8
15, 18, 21
i don't know the other one, sorry
C. Is your answer i think :)
Let n be the amount of points earned in round 5
the goal of the game is to get zero when you add up the point value from all the rounds.
this means
-9 +3 + (-8)+ 2 +n =0
add up all the given numbers, then see which number(n) is required in order to get zero
any questions?
Using the average daily balance method, the amount to be used in calculating Theresa's interest is given by:

Therefore, the interest charge on Theresa for the biling cycle is given by: