1. Seven out of every ten families in America live loan to loan

job to job

paycheck to paycheck

house to house

paycheck to paycheck

Explanation:

Living from paycheck to paycheck means that a big proportion of an individual or household income is spent on expenses. It is a situation where individuals do not save for emergencies and have no tangible investments. Almost all their incomes are spent on consumables.

In the US, over 70 % of households have not saved for rainy days. Should these families lose their source of income, they will have challenges in meeting their financial obligations almost immediately.

answer; the coefficient of determination;