The polynomial function I (a) = -47.31a2 + 4646.9a – 57, 834 represents the average income for residents of the United States, by age,
in 2014. It can be used to approximate the average income I where "a" is
the age of the individual.
Use the function to estimate the average income of a 20-year-old in
2014.

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation:

answer: 5/2     2 1/2

step-by-step explanation:

5/2              

5 goes into 2 two times so its 2 and 1/2