Bar graphs are used to compare things between different groups or to track changes over time. Bar graphs are an extremely effective visual to use in presentations and reports. They are popular because they allow the reader to recognize patterns or trends far more easily than looking at a table of numerical data. Further, Bar graphs are an effective way to compare items between different groups.
Answer:
Step-by-step explanation:

=(x^8 - x + 7) + (9x^8 + 6)
Combine like terms
=(x^8+9x^8)-x+(7+6)
=10x^8-x+13
D) 10x^8-x+13 is the answer.
Hope this helps! :)
D) Picking up 12 kids for a party and then dropping 12 kids off at the pool
1/6. since one can't be divided by six into a whole #, it doesn't reduce.