During the period 1998-2002, the number A (in millions) of books for adults and the number K (in millions) of books for kids sol
d can be modeled by
A = 9.5t³ - 58t² + 66t + 500 and K = -15t² + 64t + 360
Where t is the number of years since 1998.
Write and equation that gives the total number (in millions) of books for adults and kids sold as a function of the number of years since 1998.
Hint: Add the two polynomials together.
About how many books were sold in 2002?
Hint: Replace t with ____ years and solve to find the answer!
A = 9.5t³ - 58t² + 66t + 500 and K = -15t² + 64t + 360
Where t is the number of years since 1998.
Write and equation that gives the total number (in millions) of books for adults and kids sold as a function of the number of years since 1998.
Hint: Add the two polynomials together.
About how many books were sold in 2002?
Hint: Replace t with ____ years and solve to find the answer!
1 answer:
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Answer:
Step-by-step explanation:
It would be more obvious if it says z is a standard Normal variable and that the question is related to statistics.
From "Computing Probabilities Using the Cumulative Table" , the probability of z is less than 1.16, P(z<1.16) = 0.8770.
