- Question 22 The relationship between a person's age and the monthly cost to cover that person with a certain life insurance policy can be modeled by the equation y = 0.5x + 10, where x is the person's age and y is the monthly cost in dollars. Which statement is true according to the model? A It costs $20 a month to cover a 40-year-old. B It costs $30 a month to cover a 40-year-old. It costs $40 a month to cover a 20-year-old. It costs $40 a month to cover a 30-year-old.

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.