So,

Multiply both sides by 11.

Divide both sides by 7.
f = 1
Check.


This checks.
S = {1}
Answer:
expanded it would be 0.05 x 50 + 0.05 x 40
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
So we use PEMDAS:
-5 + 8 = 3
3 + 9 = 12
90% = 90/100 = 9/10 = 0.9
Hope this helps :)