Answer:
The book store paid $112.0 for the textbook.
Step-by-step explanation:
Let x represent amount of book paid by bookstore.
We have been given that a college bookstore buys a textbook from a publishing company and then marks up the price they paid for the book 25% and sells it to a student at the marked-up price.
The total price of the book after 25% markup would be x plus 25% of x.
We have been given that the student pays $140 for the textbook. We can represent this information in an equation as:
Therefore, the book store paid $112.0 for the textbook.
Answer:
Step-by-step explanation:
i don't know but i'll help u a little put the dots together for the first one then do it for the rest sorry if i didn't help u
Answer:
the mode of the following data
4,5,6
<span>x^2+15=8x
</span><span>x^2-8x=-15
x^2 - 2 (x)(4) =-15
adding 16 on both sides
</span>x^2 - 2 (x)(4) +16=-15+16
x^2 - 2 (x)(4) + 4^2= 1
(x-4)^2=1
taking square root on bothsides x-4 = +-1
so x-4=1 or x-4=-1
x-5 or x=3