Answer:D
Step-by-step explanation:
All the triangles are congruent
because there are two sides and 1 angle that is congruent on all triangles
SAS (theorem?)
hope this helps
Answer:

Step-by-step explanation:
Hello,
The coefficient in
is negative.
So, there is a maximum at the vertex point which is

And then the maximum is f(30)=

So the maximum profit is 94 $ per day.
Hope this helps.
Do not hesitate if you need further explanation.
Thank you