Question

Ms. Rodríguez plans to order from 20 to 26
books for her class. The prices of the books
she plans to order range from $4.95 to $12.95
each. If the publisher charges a shipping fee of
$0.50 per book ordered, which of the following
is not a reasonable price for the books,
including shipping?

Answer 1

A $145 B $245
C $345 D $445

Answer 2

ok so for this question we need to look at the two extremes: the absolute lowest cost we could get would be with the least amount of books, and the least expensive books:

so the lowest cost possible is:
20*4.95+20*0.50= 109.00$

all of our answers arebigger than that, so they all work so far.next we look at the absolute most she could have to pay (most possible books, most expensive books):

26*12.95+26*0.50=349.70$

this is the absolute most she should have to pay, so the price of 445$ is not a reasonable price