
Why?
The first thing we need to do is find the area of the triangle, we can to that by subtracting the area of ABCD from ACBE, then, we can use the formulas to calculate the area for both triangle and rectangle to find "f" and "g".
Calculating we have:

Now, we can calculate "f" by using the formula to calculate the area of the triangle:

Now, finding "g" by using the formula to calculate the area of the rectangle, we have:

Hence, we have that:

Have a nice day!
Answer:
54
Step-by-step explanation:
Mon - 2 pages read
Tues - 2x3 = 6 pages
Wed - 6x3 = 18 pages
Thurs - 18x3 = 54 pages read
X=45
Explanation: When adding 46 and 89 together you get 135, subtract 180 and 135 to get 45, which if you add the 46, 89, and 45 all together you get 180 again. Hope this helped.
I think its 8 :) please correct me!
What is the series you are referring too?