Assume that a bank initially has no excess reserves. If it receives $5,000 in cash from a depositor and the bank finds that it can safely lend out $4,500, the reserve requirement must be:

10%

Explanation:

Amount deposited = 5000

Amount which can be Lent out = 2500

The reserve requirement may be explained as a certain percentage of a commercial bank's deposit that must be held in reserve, this is usually a directive placed on the commercial banks by the central bank of the nation.

The reserve requirement is calculated by finding the proportion of the difference between the amount deposited and the maximum amount that can be Lent out to the total deposited amount.

Mathematically,

Reserve requirement =[ (deposit amount - amount that can be Lent out) / deposit amount] × 100

Reserve requirement : ([(5000- 4500) / 5000] × 100)%

= (500 / 5000) × 100

= 0.1 × 100 = 10%

Website

Annual Reports

Magazines

Newspaper

Television Advertisement

Explanation:

The company website are the reliable source for the information. These websites include information about the specific product details. Brent can easily get access to details about product design, their specification and details. There can be other website which provide reviews of products. Brent can access those website to observe the reviews of the product but since the reliability of these website can be questioned so its better not to trust everything you read.