The ph of a particular solution is given by, ph= -log(x-2), where x represents the concentration of the hydrogen ions in the solution, in moles per liter. which graph models the ph of this solution? these are the answer choices:

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Ineed with math stuff it involves graphs

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.