R = R0t⁻⁰.71. Form

The equation provided is:

$$R = R_0 t^{-0.71}$$

A negative exponent indicates that the base should be moved to the denominator. The general rule is $a^{-n} = \frac{1}{a^n}$.
Applying this rule to $t^{-0.71}$, we get:

$$t^{-0.71} = \frac{1}{t^{0.71}}$$

Substitute the rewritten term back into the equation for $R$:

$$R = R_0 \left(\frac{1}{t^{0.71}}\right)$$ $$R = \frac{R_0}{t^{0.71}}$$