D) 8.7lbs
Subtract $2.50 from the total cost, because that's a fixed number, then do more math and boom, just like magic, it's solved.
This link might help you :)
There are 9! ways in total, however, notice that certain letters repeat themselves.
For example, a permutation could be assistant but the third s could replace the first it would still be assistant.
So,
9!/(3!)(2!)(2!) <-- 3 s's, 2 a's and 2 t's
Therefore, the total permutations are: 15120
Hope I helped :)
Answer:
2(x+45)
Step-by-step explanation:
Just answer the question and press send