How to solve this question?

Bb Announcements - -MAT 123.01 x Q Lumen OHM Assessment X + C ohm.lumenlearning.com/assessment/showtest.php?action=skip&to=17 G lumenohm XI CHEN 2 User Settings My Classes ~ Log Out online homework manager Course Messages Calendar Gradebook Home > MAT 123 Fall 2019 - Precalculus > Assessment MAT 123 Fall 2019 Assignment #4 Due in 19 hours, 30 minutes. Due Thu 10/03/2019 5:00 pm Questions A radioactive substance decays exponentially. A scientist begins with 140 milligrams of a radioactive substance. After 32 hours, 70 mg of the Q 1 (0/1) substance remains. Q2 (0/1) Q 3 (0/1) How many milligrams will remain after 45 hours? Q 4 (0/1) Q 5 (0/1) Preview mg Q 6 (0/1) Q.7 (0/1) Give your answer accurate to at least one decimal place. Q 8 (0/1) Points possible: 1 License Q 9 (0/1) Q 10 (0/1) This is attempt 1 of 5. Q 11 (0/1) D Q 12 (0/1) Submit Q 13 (0/1) Q 14 (0/1) Solutions to Pr....pdf X