Answer:
(1.5, -13.5)
Step-by-step explanation:
Midpoint Formula: 
Simply plug in our coordinates into the formula:
x = (17 - 14)/2
x = 3/2
y = (-11 - 16)/2
y = -27/2
Answer:
3
Step-by-step explanation:
Subbing -3 for x in -x^2 - 4x, we get -(-3)^2 - 4(-3)
OR -9 +12
Final result: 3
12h-9h=3h move everything else to other side
3h=20-40+6
3h=-14
divide by 3
h=-14/3