Answer:
x=-85
Step-by-step explanation:
x-18=-103
x=-103+18
x=-85
The second and the third one because first is the same as 3 4/7 and 81=3^4
Answer:
2 percent
Step-by-step explanation:
We can use two separate fractions, one representing the amount of physics majors expected and the amount of seniors expected in physics majors by the university.

Now cross multiply.

x will be removed.

Simplifying this fraction will get you
, which in percentage form, will be 2 percent.