You have 2 different savings accounts. for account a, the simple interest earned after 9 months is $6.94. for account b, the simple interest earned after 18 months is $13.80. if the interest rate is 3.7% for account a and 2.3% for account b, how much is the principal in each account? which account earned you the most interest the first month? explain your answer.

(50 ) mrs. julien’s and mrs. castillejo’s classes are selling cookie dough for a school fundraiser. customers can buy packages of macadamia nut chip cookie dough and packages of triple chocolate cookie dough. mrs. julien’s class sold 25 packages of macadamia nut chip cookie dough and 30 packages of triple chocolate cookie dough for a total of $221.25. mrs. castillejo’s class sold 5 packages of macadamia nut chip cookie dough and 45 packages of triple chocolate cookie dough for a total of $191.25. (a) write the system of equations that model the problem. be sure to explain which equation represents which situation. (b) find the cost of each type of cookie. show your work. (c) explain which method you used to solve the system and why you chose that method.

Jonathan puts $400 in a bank account. each year the account earns 6% simple interest. how much interest will be earned in 5 years?

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers