A^8 * b^12
The exponent 4 is distributed to the other exponents within the parenthesis by multiplication.
a^2*4 * b^3*4
a^8 * b^12
ANSWER:
The answer is -16.75
First divide the division 3/-4 then start the addition and subtraction
The mass of the first shipment at time t is

The mass of the second shipment at time t is

At time t, the ratio of m₁ to m₂ is

Therefore as a percentage,

Answer: B. 81.2%
Answer : I think 3rd is the answer