### Home > CCA > Chapter 7 > Lesson 7.2.1 > Problem 7-87

7-87.

Find a possible exponential function in * *form that represents each situation described below.

Has an initial value of

and passes through the point . Since it has an initial value of

, the value of is. Substitute this into the general equation .Substitute the values

for andfor , then solve for.Passes through the points

and . Create two equations substituting the values of the ordered pairs for

andinto the equation.Solve the system of equations for

and.Be sure you use your results for

andto write the equation.