Question

a disease - causing fungus was introduced to a plant population. the equation n = 3^t describes the number of infected plants t days after the fungus was introduced. how many days will it take for the number of infected plants to reach 81?

Explanation:

Step1: Set up the equation

$3^t = 81$

Step2: Rewrite 81 as a power of 3

Since $81=3^4$, the equation becomes $3^t = 3^4$.

Step3: Solve for t

$t = 4$

Answer:

4