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last saved: 9: 32 am
monica
kelli is buying a book at an online store. she can choose to use one of the three deals that are shown below.
deal #1
deal #2
5% of the purchase, not
including shipping, of a
hardcover book
10% off the purchase, not
including shipping, of an
order of two or more items
deal 83
free shipping on orders
with a total over $25
the online store charges a flat rate of $3.99 for shipping. kelli is buying a book for $22.43. she could buy the same
book with a hardcover for $1.50 more.
which option is the least expensive for kelli?
• buy the book without using any of the deals.
® upgrade the book to hardcover, and use deal #1.
© order another small item for $3, and use deal #2.
© order another small item for $3, and use deal #3.