(3.5, 16)
Midpoint Formula is
((x1+x2)/2, (y1+y2)/2)
Answer: 3,130
Step-by-step explanation: 2,815 + 315 = 3,130
Answer:
r = -3.2
Step-by-step explanation:
-0.6(r+0.2) = 1.8
Divide by -.6
-0.6/-.6(r+0.2) = 1.8/-.6
r+.2 = -3
Subtract .2 from each side
r+.2-.2 = -3-.2
r = -3.2

As, 

=0.301029+0.845098+1.13943
=2.26007
=2.260(approximate)
So if f(-3), then x = -3.
Substitute.
y = -(-3)^2 + 6
= -(9) + 6
= -3
Hope it helped