Answer:
The answer: 1/10x (k-7)
Step-by-step explanation:
Answer:
x = 6
Step-by-step explanation:
cross multiplication and a wild guess
15$ I believe, as we can disregard the two original books (they have been payed for) leaving her to buy 1 book and having seven dollars, however if she needs $8 more you simply need to add 8+7.
