Long-Life Insurance has developed a linear model that it uses to determine the amount of term life insurance a family of four should have, based on the current age of the head of the household. The equation is:
y = 161 - .2x
where
y = Insurance needed ($000)
x = Current age of head of household
Use the equation to determine the amount of term life insurance to recommend for a family of four if the head of the household is 21 years old.