Answer:
D. 
Step-by-step explanation:
The point-slope form of a line is given by:

The line given to us has equation;
.
The slope of this line is -4. The of the line perpendicular to this line is the negative reciprocal of the slope of the given line.
Our slope of interest is therefore; 
Since the point goes through (-2,7), we have
.
We plug in the slope and the point into the point-slope formula to obain;

The required equation is:

Answer:
6.25 times two equals 12.5
Step-by-step explanation:
I don't get what your asking.
Answer:
3/5
Step-by-step explanation:
First you would need to add the amount of people who play only basketball, or only baseball. That would be 18. You would then put it in fraction form as 18/30. You can simplify that fraction to 3/5. In decimal form that would be .6 and as a percent 60%.
It would be -5.6, 3 9/10, square root of 21 and then 5.2.
-5.6 is a negative, the square root of 21 is about 4.6, 3 9/10 is equal to 3.9 and 5.2 is the greatest out of them all.