Express each of the following as a rational number of the form, where p and q are integers and q0:

(i) 2^-3

(ii) (-4)^-2

(iii)

(iv)

(v)

Find the values of each of the following:

(i)

(ii)

(iii)

(iv)

Find the values of each of the following:

(i)

(ii)

(iii)

(iv)

Simplify:

(i)

(ii)

(iii)

(iv)

Simplify:

(i)

(ii)

(iii)

(iv)

By what number should 5^-1 be multiplied so that the product many be equal to (-7)^-1?

By what number should be multiplied so that the product may be equal to ?

By what number should (-15)^-1 be divided so that the quotient may be equal to (-5)^-1?