About how much of Earth's water is available for humans to use? a. 0.01%

b. 0.90%

c. 3.0%

d. 97.0%

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Which is f(5) for the function –2x2 + 2x - 3?

I’m really confused and need your assist me with this question i’ve never been taught