Answer: 81%
Step-by-step explanation:
From the question, we are informed that a student received the following test scores: 71%, 89%, 72%,
84% and 83% in 5 tests and the student wants to maintain an average of 80%.
The lowest score/grade they can receive on the next test to maintain at least an 80% average first thus:
First, to make it easy we can remove the percent sign. Then we multiply 80 by 6 since we're calculating for 6 tests scores. This will be:
= 80 × 6
= 480
We then add all the 5 test scores. This will be:
= 71 + 89 + 72 + 84 + 83
= 399
We then subtract the values gotten. This will be:
= 480 - 399
= 81
This means the student must get at least 81%
The answer is D, the ordered pair (5,3)
Answer:
A
Step-by-step explanation:
Consider all options and find f(3):
A.
Then
Not -5, so this option is false.
B.
Then
This option is true.
C.
Then
Not -5, so this option is false.
D.
Then
Not -5, so this option is false.
