I believe your answer is D my friend.. good luck! :)
Answer:
7.9 Age Word Problems
One application of linear equations is what are termed age problems. When solving age problems, generally the age of two different people (or objects) both now and in the future (or past) are compared. The objective of these problems is usually to find each subject’s current age. Since there can be a lot of information in these problems, a chart can be used to help organize and solve. An example of such a table is below.
The correct answer is letter <span>A. dedicated. </span><span>The question talks about the Unit 7 of Lesson 12
Unit Checkpoint: Life Stories, Part 1. It describes the scientists as </span>dedicated. Scientists are mostly dedicated to the things that they are doing because whatever the output of their experiments are later be used.