Question

Write the equation for an exponential function that triples ever year, x, when the original amount is 4.

Answer 1

y = 4(3)^x

Explanation:

Here, we want to write the exponential equation

From the question, we have the equation tripling in x value every year and the original amount is 4

The exponential equation is of the form;

y = a(b)^n

In this case;

a = 4 , b = 3 and n = x

So we have the equation as;

y = 4(3)^x