Tim is measuring the weight (in ounces) of a substance for a science experiment. tim added a mystery substance (m) to his experiment. tim used the equation 12.93 + m = 17.0 to find out how much he added. how much of the mystery substance (m) did tim add to his experiment? a)4.07 ounces b)4.97 ounces c)5.03 ounces d)5.17 ounces

The weight of the mystery substance added by Tim is 4.07 ounces. Hence option A is correct.

Solution:

Given, Tim is measuring the weight (in ounces) of a substance for a science experiment.  

Tim added a mystery substance (m) to his experiment.  

Tim used the equation 12.93 + m = 17.0 to find out how much he added.

We have to find how much of the mystery substance (m) did Tim add to his experiment?  

Now, from the given equation, 12.93 + m = 17.0 → m = 17.0 – 12.93 → m = 4.07

Hence, the weight of the mystery substance is 4.07 ounces, i.e. option A is correct.