Answer:
6. B) 115
7. B) 180 - (180 - 90 + 30) = x
Step-by-step explanation:
Answer:

Step-by-step explanation:

(3/4)^4 = 81/256
1 ÷ 81/256 = 256/81
So;



The yearly fee can be subtracted, resulting in 170-25.50=144.5
So with 10.50 a session, you must divide, resulting in around 13.8 sessions.
13 sessions if you need a whole number.
Hope this helps