Question

Kelsey had $65 to spend on books. Each book cost $5.50, and there was a $7.50 fee for shipping. She let b equal the number of books she can purchase and wrote the inequality 5.5b+7.5<65 to represent the situation. Which statements describe the reasoning used to determine if Kelsey’s inequality is correct? Check all that apply.
[ ]The inequality symbol is correct because she must spend less than $65.
[ ]The inequality symbol is incorrect because she can spend up to and including $65
[ ]The expression 5.50b + 7.5 is correct because $5.50 per book is 5.50b and that is added to the shipping fee of $7.50 to determine the total purchase price.
[ ]The expression 5.50b + 7.5 is incorrect because $5.50 per book and $7.50 should be combined to $9.50b to determine the total purchase price.
[ ]The inequality symbol is correct because she cannot spend more than $65.

Answer 1

Answer:

Let the number of books she can purchase = b

The cost of each book is $5.5 with an extra shipping of $7.5

So, the total cost of the books she can purchase = $5.5b+7.5$

Since, she had $65 to spend on the books.

The required inequality is $5.5b+7.5\leq 65$.

So, according to the inequality above, we get,

The correct options are,

B. The inequality symbol is incorrect because she can spend up to and including $65.

C. The expression  $5.5b+7.5$ is correct because $5.50 per book is  $5.5b$ and that is added to the shipping fee of $7.50 to determine the total purchase price.

Answer 2

Answer:

B and C

Step-by-step explanation: