Roberta thinks that she should store all of her savings under her mattress. Her son Micah wants her to invest the money. He tells her that when money is invested or saved in an account earning interest, that sum increases in value over time without the owner doing anything. What concept is Micah trying to teach Roberta?

Ll companies has sales of $9,800, net income of $1,060, total assets of $8,950, and total debt of $4,760. assets and costs are proportional to sales. debt and equity are not. a dividend of $371 was paid, and the company wishes to maintain a constant payout ratio. next year's sales are projected to be $10,584. what is the amount of the external financing need?