Answer:
The answer is 4 classes.
Step-by-step explanation:
Nathan bought one notebook and one binder for each of his college classes.
Notebooks cost 0.95 each and binders cost 5.82 each.
So, he paid dollars
The total cost of notebooks and binders Nathan paid 27.08.
This means he bought these things for classes.
0.95 + 5.82 = 6.77 for each
27.08/6.77= 4
so he's taking 4 classes
b)
a2=b2+c2-2bc cos a