What two numbers multiply to get 24 and adds to get negative 10

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

Which of the following can be used to explain a statement in a geometric proof?

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red