

check the picture below.
bearing in mind that "t" cannot be less than 0.
Answer:
The result of the multiplication is 
Step-by-step explanation:
In scientific notation, 40 can be represented as: 
Multiplication:
Multiply the coefficients and the powers. So
Coefficients: 
Powers: 
Multiplication: 
Answer: That's the correct answer. You already have it.
Step-by-step explanation: