Problema Solution

Your company uses the quadratic model y = -4.5x2 + 150x to represent the average number of new customers who will be signed on (x) weeks after the release of your new service. How many new customers can you expect to gain in week 18?

Answer provided by our tutors

y = -4.5x^2 + 150x


We need to find y when x = 18 weeks.


Plug x = 18 into y = -4.5x^2 + 150x


y = -4.5*18^2 + 150*18

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y = 1,242 customers


The average number of new customers in 18 weeks is 1,242 customers.