do both parts, answer should be to the fourth decimal place but i keep getting 3

The half-life of a pesticide determines its persistence in the environment. A common pesticide degrades in a first-order process with a rate constant of 5.51 /hours. What is the half-life in hours of the breakdown reaction? Enter to 4 decimal places. (MTS 9/23/2018 ) Question 5 2 pts The half-life of a pesticide determines its persistence in the environment. A common pesticide degrades in a first-order process with a half-life of 2 days. What fraction (in decimal notation) of the pesticide remains in the environment after 14 days? Enter to 4 decimal places. (MTS 9/23/2018)