Acidity is measured on the pH scale. The acidity of a substance is given by pH=−logH, where H is the concentration of Hydrogen ions. If a substance has an H value of 0.0008, what is the pH of the substance, rounded to the nearest tenth?

  3.1

Step-by-step explanation:

Put the concentration value in the formula and evaluate.

  pH = -log(0.0008) = -(-3.09691) = 3.09691

  pH ≈ 3.1

$97520

step-by-step explanation:

add 6% to the value she got from selling the house.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,