I can't directly tell you the answer, but I can help you for how to do it.
So every single time you want to find the rate of change (slope) label 2 points with x1, y1, x2 and y2. We can use the point-slope form to sind the slope:
y1-y2/x1-x2
And we just need to plug in the point to get the Y intercept.
When the x is 0, the y value will be the y-intercept.
The slope intercept form is: y=Mx+B. M stands for slope and B stand for y-intercept. Just plug the slope and y-intercept in and get the answer.
Answer:
54.5
Step-by-step explanation:

2 tens, 4 ones, 3 tenths, 5 hundredths, 7 thousandths
I showed my work and answer in this picture. When simplifying square roots you can split them into a perfect squares root time the remainders
Answer:
D appears to be a regular polygon ..
The definition of a polygon is to have all the same angles which appears to be D