Answer:
Jacob's score will be high by 2.25.
Step-by-step explanation:
Average:
The ratio of total marks to the number of test.
[tex]\textrm{Average score}=\frac{\textrm{Total number of score}}{\textrm{Number of test}}[/tex]
Jacob's average score was 82 for 7 tests.
Total score of Jacob was = (82×7)
=574
Jacob makes 100 the next test.
After this test, his total score=574+100
=674.
Now, he gave total (7+1)=8 test.
His average score will be
[tex]=\frac{674}{8}[/tex]
=84.25
His average score will high = (84.25-82)
= 2.25.
