Plzzz help! will give branliest if you can do this one!!! i also need help with other math problems

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

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

What’s -11-33k and factor each expression completely