1. Shebly made a list of her test scores 88, 100, 92, 80, 85, 94 and 90. What is the?

Question

lowest score she can get on her next tests to have a mean score of 90?
1. What are you being asked to do?
2. If you already know the mean and all her test scores but one, how can you find the missing test score?
3. What is her mean score right now?
4. Does her next test score need to be higher or lower than 90?
5. How many tests will there be, including the next test?
Multipy that number by 90.
6. Take all her test scores, including the one that you found, and find the mean. is it 90?
7. The mean of five numbers is 55. If four of the numbers are 86,77,14, and 12, what is the other number?

Answer 1

i remember this!
. . .
uh, well it would take me a while to answer

Good Luck ♥