Step-by-step explanation:
I'd 78394327272 PWD DK2iW8
Answer:
A. 5
Step-by-step explanation:
The marginal benefit of an article,
is calculated as:

Where
is the change in the total benefit of the article, and
is the change in the units of the article.
If we want to know the marginal benefit of watching the 3rd game, we need to use the information of total benefit of watching 2 games and 3 games.
In this case, the total benefit of watching 2 games is 120 and the total benefit of watching 3 games is 125, so
and
are equal to:


Then, the marginal benefit of watching the third game is:

Answer:

Step-by-step explanation:
<u>Step 1: Determine the area of the left rectangle</u>
We can tell that the total shape seems like two rectangles glued together. We can separate the left rectangle and determine the area of it and then determine the area of the right rectangle and combine them. Lets first solve the left rectangle.



<u>Step 2: Determine the area of the right rectangle</u>



<u>Step 3: Determine the total area</u>



Answer: 
30
liam has finished 30 lessons
15/20 is equal to 3/4
so 3/4 of 40 is 30.
hope i helped. have a good day