An indifference curve must slope downward towards the right. is positively sloped. may be upsloping or downsloping, depending on whether the two products are complements or substitutes. is upsloping and is concave to the origin.

must slope downward towards the right.

Explanation:

The indifference curve is the curve representing the combination of two products which derives similar satisfaction and the utility which makes the customer distinct.  

The properties of the indifference curves are as follows:

1. It slopes downwards towards the right

2. It never be intersected to each other

3. It is convex to the origin

The amount mount of Bad Debt Expense to be recorded for the year is $5,500

Explanation:

Solution

Given that:

The Estimated uncollectible account = $7,900

What this means is that , the allowance account should have a adjusted balance of $ 7,900 Credit at year end.

Now,

The Current un-adjusted balance in allowance account = $ 2,400 Credit

So,

The allowance for doubtful account need to be credited by an amount IS = [$7,900 - $ 2400]  = $5,500

The bad debt expense =  $5,500

Note: but the based on the data provided in the question, the correct answer should be $5,500