Here is part of a railway timetable. Norwich
0655
0710
0755
0805
0737
0752
0830
0847
Ipswich
Colchester
0812
0906
London
0848
0903
0933
0955
0848
a) At what time does the first train arrive in London?
b) How long does it take the 0710 train from Norwich to arrive at Colchester?
hours 2 minutes
1
c) Carys gets to Norwich station at 0750.
How long will she have to wait for a train directly to Colchester?
11 minutes

I dont get this question

Step-by-step explanation:

i think the answer is fried chicken ; >

step-by-step explanation:

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204