Answer:
115 + 13w 180
Step-by-step explanation:
3x + 7 = 1 3
3x = 13 - 7
3x = 6
x = 6/3
x = 2
A clinical test on humans of a new drug is normally done in three phases. Phase I is conducted with a relatively small number of healthy volunteers. For example, a phase I test of a specific drug involved only 7 subjects.
