5. Convert to exponential form: log(x + 5) = 3 6. Convert to logarithmic form: 19683 = 3x-7

Convert the equation from logarithmic equation to exponential form: 3=log7343

Solve for x by converting the logarithmic equation log17(x)=2 to exponential form.

A radiation safety officer is working with 112 grams of a radioactive substance. After 17 days, thesample has decayed to 80 grams. Rounding to fivesignificant digits, write an exponential equationrepresenting this situation. To the nearest day, whatis the half-life of this substance?