So we are given the equation
y = 79.31(1.48)ˣ
Whereas the x represents the number of days <--- what you need to know
y is the final number you are going to get, does not matter for now
You are trying to find the number of bacteria on Day 8
Put 8 into x
PEMDAS
Parentheses
Exponents
Multiplication/Division
Addition/Subtraction
1.48⁸ = 23.019
79.31 * 23.019 = 1825.667
Your answer would be A.