7. [/5 Points] DETAILS HHCALC6 9.2.026. MY NOTES Find the sum of the series. 2 3 1+l+z_+z_+ 4 16 64 For what values of the variable does the series converge to this sum? (Enter your answer using interval notation.) 8. [/5 Points] DETAILS HHCALC6 9.2.030. MY NOTES Find the sum of the series. 6+X+X2+X3+~~ For what values of the variable does the series converge to this sum? (Enter your answer using interval notation.) 9. [/4 Points] DETAILS MY NOTES 9. [-14 Points] A new car costs $29000 and loses 12% of its value each year. (a) Find the depreciation (loss of value) in dollars in the third year. First year depreciation: $ 3480.00 Second year depreciation: $ 3062.40 Third year depreciation: $ :] (b) Give a formula for d", the depreciation in the nth year. Hint: It might be helpful to note that if 12% of the value is lost, then 88% of the value remains. (in: 10. [-I8Points] - Suppose the drug atenolol is taken in 25 mg doses once a day to lower blood pressure. At the end of a 24 hour period, approximately 7 \"/a of the atenolol is still present. (3) Find expressions for the quantities Q1, Q2, Q3, . . ., and an , representing the amounts of atenolol in the body right after taking the 1st, 2nd, 3rd doses respectively. Then write the expression for Q,, in closedform. Q1 Q2 Q3 Qn= (b) Find expressions for the quantities P2, P3, P4, . . ., and Pn representing the amount of atenolol in the body right before taking the 2nd, 3rd, 4th doses respectively. Then write the expression for P" in closed-form