Mary invest R2000 at a bank with a interest rate of 5% p. a. . 3 years later Mary adds R7000 to her investment. When she adds R7000 to her investment, the interest rate changes to 15% p. a. What is the total interest earned on her investment if she takes out all the money from the investment 2 years later after the addition of R7000. ​

What is the value of x? enter your answer in the box. photo attached.

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.