Question

e(t) = 9t + 3, what is e(2)?
options: 12, 21, 18, 15

Explanation:

Step1: Substitute t = 2 into E(t)

We have the function \( E(t) = 9t + 3 \). To find \( E(2) \), we substitute \( t = 2 \) into the function. So we get \( E(2)=9\times2 + 3 \).

Step2: Calculate the value

First, calculate \( 9\times2 = 18 \), then add 3 to it: \( 18 + 3 = 21 \).

Answer:

21