Answer :
To solve the problem, we start by converting the percentage rate to a decimal. Given a rate of change of [tex]$-31\%$[/tex], we have:
[tex]$$
-31\% = -0.31.
$$[/tex]
Next, the growth or decay factor for one time period is calculated by adding [tex]$1$[/tex] to the rate in decimal form:
[tex]$$
\text{Growth/decay factor} = 1 + (-0.31) = 1 - 0.31 = 0.69.
$$[/tex]
Thus, the corresponding growth or decay factor is [tex]$\boxed{0.69}$[/tex].
[tex]$$
-31\% = -0.31.
$$[/tex]
Next, the growth or decay factor for one time period is calculated by adding [tex]$1$[/tex] to the rate in decimal form:
[tex]$$
\text{Growth/decay factor} = 1 + (-0.31) = 1 - 0.31 = 0.69.
$$[/tex]
Thus, the corresponding growth or decay factor is [tex]$\boxed{0.69}$[/tex].
