Find the exact values of the following, giving your answers as fractions.
a) 3^-2
b)4^-3
c)2^-5

(a)

(b)

(c)

Step-by-step explanation:

To find the exact value in fractions of the followings:

Exponents also called powers its a way of expressing a number multiplied by itself by a certain number of times.

Using                    [1]

(a)

Fraction represents a part of a whole or more generally, any number of equal parts.

=          [ Using [1]]

(b)

=           [ Using [1]]

(c)

=           [ Using [1]]

you didn't post any answer choices, so its not 100% clear what your teacher is looking for

however, log(15/7) is equivalent to log(15) - log(7)

i'm using the rule log(x/y) = log(x) - log(y)