Answer:
Jenny would have to get a 99 on her next test to raise her average from a 94 to a 95.
Step-by-step explanation:
First you need to find her current average:
93 + 89 + 96 + 98 = 376/4 = 94
Now that you have the current average, all you need to do is find what would be the total of her grades if she had a average of 95. Since her average would be 95, and she would have completed 5 tests, it makes sense to multiply the average by the number of tests:
95 x 5 = 475
Now all you need to do is remove from this number the sum of the original 4 tests, and voila! There is her 5th test score:
475 - 376 = 99
Her 5th test score is 99%.
