MATHEMATICS · Subjective · AP · AP Precalculus · Exponential and Logarithmic Functions · Exponential and Logarithmic Functions
Problem
Identify the initial value and the rate of change. Also, explain the meanings of each in practical (contextual) terms. Note: be sure to include units when reporting your answers.
After a rainstorm, the water in a trough begins to evaporate. The amount in gallons remaining after t days is given by V(t)=50−1.2t.