The pH of a solution is a measure of how acidic it is. The greater the acidity, the lower the pH. The
function f(x) = -log .x gives the pH of a solution,
where x is the concentration of hydrogen ions, in
moles per liter.
The graph of f(x) = -log x is a
of the graph of
9(26) = log x.

47 - 90 = 43

43 - 180 = x

x = 137

constant of proportionality = 3 and the equation is c = 3p.

step-by-step explanation:

c = kp   where c = amount of caffeine in mg., p = oz of pepsi and k is the constant of proportionality.

substituting the values given:

24 = 8k

k = 3.

the same value of k will be obtained if we substitute the other given values.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: