Her error was 85-80=5
So her percent error was 5/85=0,059 which is 5,9%
Is it clear to you?
F(x) = -x^2 + 3x + 8
f'(x) = -2x + 3
when f(x) is increasing f'(x) > 0
-2x + 3 > 0
-2x > -3
x < 3/2 or 1.5
So the required interval is (-infinity,1.5).The first choice.
Step-by-step explanation:
1) see the attached picture;
2) 120+80=200 (persons).
PS. change the design according to local requirements.
Answer:
[1 26 7]
Step-by-step explanation:
[1 26 7]
one row three column