Find the slope
we take the points
(75,2.3) and (82,3)
so
m=(3-2.3)/(82-75)
m=0.7/7
m=0.1
the units of the slope are grade-point averages by entrance exam scores
The diagram shows the graph of the function 
This graph is increasing, when b>1 and decreasing, when 0<b<1.
From this graph (in case 0<b<1) you can see that
Answer: correct option B.
I am probably wrong but 45 degrees? Most if not all triangles equal 180. Since we already have 90 degrees we can subtract 90 from 180 and get 90. Both of the angles on the bottom left and right look about the same size so we can divide 90 by 2 and get 45.
Answer:
So if Jill, Sabrina and Kelly write the report together, it will take 4 hours.
Step-by-step explanation:
We know that Jill and Sabrina can write a lab report together in 6 hours. We know that all people work at the same rate.
So, we conclude that it will take Jill or Sabrina 12 hours if they write the report themselves. Kelly will also need 12 hours to write a report because we know everyone is working at the same speed.
We conclude that if all three work together they will need three times less time. We get:

So if Jill, Sabrina and Kelly write the report together, it will take 4 hours.
Answer:
Step-by-step explanation:
If a and b are rational and b is not zero, then a/b is also rational. Indeed, if a=m/n and b=p/q, where m,n,p, and q are integers, then a/b=mq/pn, i.e. it is also a ratio of two integers, and is therefore rational.