Answer:
83 points
Step-by-step explanation:
-The formula for average is given as:

Let a be his 5th score and (a+4) of the 6th
#We subtract the sum of the first 4 tests from the 6, to get the sum of the 5th and 6th tests:

#We substitute for the 5th and 6th to solve a:

Hence, Karl score 83 points in his 6th test.
When x =2, f(x) = 128
When x = 4, f(x) = 8
The changing rate is

This changing rate represents the decrease of the number of contestants as the competition approaches the final.
Correct option is the first option
<span>
−60 contestants per round and it represents the average rate at which the number of contestants changed from the second round to the fourth round
</span>
Answer:
b
Step-by-step explanation:
Answer:
-2
Step-by-step explanation:
-2 is marked on number line, count 5 to the left is -7
Answer:
48
Step-by-step explanation:
