Ocean sunfishes are well-known for rapidly gaining a lot of weight on a diet based on jellyfish. The relationship between the elapsed time, $t$, in days, since an ocean sunfish is born, and its mass, $M(t)$, in milligrams, is modeled by the following function: ###$M(t)=3\cdot \left(\dfrac{81}{49}\right)\^{\Large t}$ **Complete the following sentence about the rate of change in the mass of the sunfish.** *Round your answer to two decimal places.* The mass of the sunfish increases by a factor of $\dfrac97$ every [[☃ numeric-input 1]] days.