Fill in the Blank with One of the Words or Phrases

Multiple Choice

Fill in the blank with one of the words or phrases listed below. Some words or phrases may be used more than once. $$\begin{array} { l l l l } \text { inverse } & \text { common } & \text { composition symmetric } & \text { exponential } \\\text { vertical } & \text { logarithmic } & \text { natural } \quad \text { half-life } & \text { horizontal }\end{array}$$
-A quantity that grows or decays by the same percent at regular time periods is said to have ---------- growth or decay.

A) common
B) exponential
C) logarithmic
D) natural