Which of the following expressions is equivalent to the logarithm expression below log4 7/c^3

What is the size of the matrix resulting from

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years