En una evaluación de matemática las notas de los alumnos de un curso fueron: 10-7-9-8-10-8-2-8-8-7-9-7-8-7-7-6-6 -6-6-5-9-5-5-9-5-8-5-7-4-4-9-4-3-9- 3-2-1-10-8-6.
¿cuantos alumnos asistieron a la evaluación?

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

f(x) is   are being squared

g(x) is   increasing by 2

h(x) is adding .25 each time

k(x) is taking the square root

f(x) and k(x) are exponential functions

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75