3. The amount of junk mail received in one week by residents of a suburban town can be modeled by the quadratic function mx)=-x² +30x+100, where m(x) is the number of pieces of junk mail (in thousands) and x is the number of years after 1980. Be careful with units! Assuming this model continues to hold, in what years are the number of pieces of junk mail expected be 300 thousand? Show your work, and round to the nearest year.
3. The amount of junk mail received in one week by residents of a suburban town can be modeled by the quadratic function mx)=-x² +30x+100, where m(x) is the number of pieces of junk mail (in thousands) and x is the number of years after 1980. Be careful with units! Assuming this model continues to hold, in what years are the number of pieces of junk mail expected be 300 thousand? Show your work, and round to the nearest year.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter8: Polynomials
Section8.1: Adding And Subtracting Polynomials
Problem 44PPS
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