a = ( 1 , 6 )
b = ( 4 , 9 )

Now just need to put the coordinates in the above equation :



And we're done...♥️♥️♥️♥️♥️
B is the answer
the formula is :

which r stands for radius
and h stands for height
the diameter is 16
so the radius is

hope you understand it
The answer is 308 by multiple
his average test score would be 82
you add together all the test scores
90 + 76 + 84 + 66 + 96 + 89 + 73 =574
and then you divide that number by how many scores there were
574 ÷ 7 = 82