Will upvote every answer! multiple choice!

a researcher found that the sea level rose 1 5 of a centimeter in 2 3 of a year. what rate did the sea level rise?

a. 2 5 centimeter per year
b. 3 5 centimeter per year
c. 2 15 centimeter per year
d. 3 10 centimeter per year

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

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?

A50% increase followed by 33 1/2% decrease