._ __- _ __-_ . "d __.._ _ __'-B_'_'-" 1. Practice using log notation to solve the following equations. Give an exact answer and an approximate answer. a. 7500 + % 121' = 1000 b. 3000 = 500(1 + 0:56:53\" 2. Nene is considering a retirement account investment that pays 2.75% compounded quarterly. She plans to invest $1800 and may open an additional retirement account next year. How long will it take Nene's investment to double in this retirement account? Write a function and use algebra to solve, and check your solution with a table or graph on your calculator. Document your check by reproducing the relevant part of the table, or giving a sketch of your graph. 253 3. You have a choice of three investments at a bank where you have a checking account. . The rst investment choice is a CD that pays 4% every 2 years, but it requires a $1500 minimum investment. . The second choice is a money market account that pays 3.875% interest, compounded quarterly. . The third choice is a bank savings account that pays 3.2 5% interest, compounded monthly. You have $1300 to invest, but your grandma says if you put your $1300 into the CD option, for your birthday she will give you the additional $200 needed to make the $1500 investment. Which investment should you choose? Use what you have learned in Math 29 to decide which investment to choose. Carefully document the 4-step problem solving process. 254