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an onine SOcial group nad 3o0 miion Tme uently, new me m(t) = -3.3t2 + 14t + 230 million members per year (0 sts 5), where t is time in years since the start of 2010. (a) Find an expression for the total online social group membership M(t) at time t. HINT [See Example 6.] M(t) = (b) Use the answer to part (a) to estimate the online social group membership midway through 2012. (Round your answer to the nearest 1 million members.) M(2.5) = million members

an onine SOcial group nad 3o0 miion Tme uently, new me m(t) = -3.3t2 + 14t + 230 million members per year (0 sts 5), where t is time in years since the start of 2010. (a) Find an expression for the total online social group membership M(t) at time t. HINT [See Example 6.] M(t) = (b) Use the answer to part (a) to estimate the online social group membership midway through 2012. (Round your answer to the nearest 1 million members.) M(2.5) = million members

College Algebra
College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter1: Equations, Inequalities, And Mathematical Modeling
Section1.4: Quadratic Equations And Applications
Problem 9ECP
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At the start of 2010, an online social group had 360 million members. Subsequently, new members joined at a rate of roughly m(t) = -3.3t² + 14t + 230 million members per year (0 <t< 5), where t is time in years since the start of 2010. (a) Find an expression for the total online social group membership M(t) at time t. HINT [See Example 6.] M(t) %D (b) Use the answer to part (a) to estimate the online social group membership midway through 2012. (Round your answer to the nearest 1 million members.) M(2.5) = million members
Transcribed Image Text:At the start of 2010, an online social group had 360 million members. Subsequently, new members joined at a rate of roughly m(t) = -3.3t² + 14t + 230 million members per year (0 <t< 5), where t is time in years since the start of 2010. (a) Find an expression for the total online social group membership M(t) at time t. HINT [See Example 6.] M(t) %D (b) Use the answer to part (a) to estimate the online social group membership midway through 2012. (Round your answer to the nearest 1 million members.) M(2.5) = million members
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