100 POINTS AND BRAINLIEST!! Please answer the last 2 and SHOW UR WORK! 
THANK YOU :D
                                             
                                          
                                          
                                        
											 
											Answer:
p=$20000
t=?
rateR =15%
d=20000/2=10000
Step-by-step explanation:
we have
d=p(1-r/100)^t
10000=20000(1-15/100)^t
10000/20000=85/100^t
1/2=0.85^t
sorry. i did not get answer after this.
