Hey mate!
You stuck?
Xian and Kai would both need to receive stamps for 6 months to eventually have the same amount of stamps.
Xian: 12 stamps from club x 6 months + 56 stamps = 128
Kai: 8 stamps from club x 6 months + 80 stamps = 128
Hope this helps! :)
Answer:

Step-by-step explanation:
Use the Pythagorean Theorem

and
are either opposite or adjacent
is the hypotenuse.
1. Look for the right angle. (the little box). The right angle "points" to the hypotenuse. In this case, the hypotenuse is 25.
2. Because we know the hypotenuse is 25. We know that 24 is our adjacent. Meaning our missing side is the opposite.
3. Plug in the numbers. 
4. Solve:






Hope this helps! Lmk if you have questions.
#3. C.
#4. D
Sorry that the drawing isn't the best.
Letter C because it has 1 term only.
Not D because it is a Constant
Answer:
Brand has less mass or fluids than b does and since b has greater fluid it will cost more then the smaller brand