Answer:
2. Cost of six books
3. Cost of one book
Step-by-step explanation:
I don't know about the rest though.
32,533.3>
Because 6100x16=97,600divided by 3=32,533.3

now, a line perpendicular to that one, will have a "negative reciprocal" slope, thus
Answer:
-3
Step-by-step explanation:
-20-15+30+2
-35+32
-3