True
This is because on replacing for x=5;
y=2x-11
y=2(5)-11
y=10-11
y=-1
It would be 7.54 because you fist have to put the numbers ordered smallest to biggest amount 7.15, 7.44, 7.48,7.60, 7.72, 7.73 so the numbers that are in the middle are 7.48 and 7.60 you add them up, and the result you divide by 2 which gives you 7.54.
Since both values are positive, it is in quadrant 1
Yes it is linear since it's in the standard form Ax+By = C
A = 2
B = -8
C = 16
v = PI x r^2 X H
v = 3.14 x 6^2 x 13
v= 3.14 x 36 x 13 = 1469.52 cubic units
answer may vary slightly depending on value of PI used.
