The equation for the ph of a substance is ph = –log[h+], where h+ is the concentration of hydrogen ions. what is the approximate ph of a solution whose hydrogen ion concentration is 2*10^-9 a. 1.0 b. 2.9 c. 8.7 d. 9.3

What is the y-intercept of the graph of the equation y=3(2^x)

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

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.