The answer is -2 + 4y^3 + 4x^2
For this case we have an equation of the form:
y = A * (b) ^ t
Where,
A: initial amount
b: growth rate
t: time
We then have the following equation:
y = 57 (1.31) ^ t
The initial number of bacteria is 57 and the growth rate is 31% per hour.
Answer:
B. The initial number of bacteria is 57 and the growth rate is 31% per hour
<u>Answer-</u>

<u>Solution-</u>
Given the two polynomials are 
So their product will be,

Distributing the Parentheses,

Applying minus-plus rules,

Simplifying further,
