A certain radioactive material decays at a continuous rate of 4% per year. If the initial mass is 195 grams, how much of the mass remains after 45 years? You may use the formula A(t)=A↓0e^k*t where A(t)is measured in grams.

The mass that remains after 45 years is grams.
Round answer to 1 decimal place.

What is the simplified expression for 6(2(y+x))

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17