Answer:
-7
Step-by-step explanation:
The answer is -7 degrees per hour because if it changes the same over 4 hours, and changes -28 degrees in total, you can divide the two (-28/4), and you will get -7 degrees per hour.
f(2b) = 4b^2 +4b +1
Put 2b where x is and simplify.
f(2b) = (2b)^2 +2(2b) +1
f(2b) = 4b^2 +4b + 1
10
pano ba yan mag isip ka may utak ka tanga
(x+5)⋅(x+4)= x2+9x+20
(x+5)(x+4)
=x
2
+4x+5x+20=
+9x+20
