Marie has $20. She plans to spend 50% of her
money on paperbacks. What is the greatest number
of paperbacks can she buy?

 Depends on how much a paperback book costs.  But we can at least get some idea from the information provided.  50% of $20 is $10.  So, if a paperback is $10 she could be 1.  If they are $5 she could by 2.  If they are 1$ each she could buy 10 etc.

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

pla·gia·rism

/ˈplājəˌrizəm/

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

step-by-step explanation: