The complete table will be:

<u><em>Explanation</em></u>
Suppose, the number of sit-ups in Sunday is 
Mean is the simple average of some numbers. <u>For finding the mean number</u> of sit-ups per day, we need to <u>divide the 'total number of sit-ups' by the 'total number of days'</u>.
Here the total number of days is 7 and the total number of sit-ups for 7 days 
Given that, the mean number of sit-ups per day is 100. So, the equation will be...

So, the number of sit-ups you have to do Sunday is 175.
Answer:

Step-by-step explanation:
We are given the following function in the question:

We have to derivate the given function.
Formula:

The derivation takes place in the following manner


Well if your having trouble you should stay after school and ask for help that's what I would do.
Answer:
acute triangle, obtuse triangle
Step-by-step explanation:
The sums of interior angles of all triangles are 180°, but the triangles are only similar if their corresponding angles are congruent.
An acute triangle and an obtuse triangle both have angle sums of 180°, but can never be similar to one another.