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.

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer

can you rephrase the question ? it is unclear : -)

step-by-step explanation:

14.29%

step-by-step explanation:

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)