Question 11 (5 points) Find the solution to the problem below:
The half-life of a radioactive substance is 300 years. If you start with 100 kilograms
(kg) of this substance, how much will remain in 120 years?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Pls if a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?