Andrew invests £2500 in an account for 4 years at 2.4% compound interest per year. At the end of the 4 years, a deduction of 30% of the total interest is made from the account. Work out the amount in the account at the end of the 4 years, after the deduction has been made.

(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.

Which of the following exponentially equations is equivalent to the logarithmic equation below?

Which of these lines passes through the point (1,-1) and has a slope of -3?