A(q)=86(0.9)4qThe function models A, the number of active players, in thousands, of a mobile game q quarter years after 2018. Based on the function, how many quarter years does it take for the number of active players to decreases by 10% ?Choose 1 answer:(A) 0.1(B) 0.225(C) 0.9(D) 4
Q. A(q)=86(0.9)4qThe function models A, the number of active players, in thousands, of a mobile game q quarter years after 2018. Based on the function, how many quarter years does it take for the number of active players to decreases by 10% ?Choose 1 answer:(A) 0.1(B) 0.225(C) 0.9(D) 4
Problem Understanding: Understand the problem.We are given a function A(q)=86(0.9)4q that models the number of active players in thousands, q quarter years after 2018. We need to find out how long it takes for the number of active players to decrease by 10%.
Equation Setup: Set up the equation to solve for the time it takes for the number of active players to decrease by 10%. We want to find the value of q such that A(q) is 90% of A(0), since a 10% decrease means the number of players is 90% of the original number. So, we set up the equation: 86(0.9)4q=0.9×86.
Equation Simplification: Simplify the equation.Divide both sides of the equation by 86 to isolate the exponential term:(0.9)(q/4)=0.9.
Solving for q: Solve for q.Since the bases are the same, we can set the exponents equal to each other:4q=1.
Solving for q: Solve for q.Since the bases are the same, we can set the exponents equal to each other:4q=1.Multiply both sides by 4 to solve for q.q=4.
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