Two large telecommunications companies are considering a merger. The net income, in billions of dollars, of the first company can be modeled by the function A(t) = 9.01t ^ 2 - 20.60t + 23.55 , where t is the number of years since 2013. The second company's net income, also in billions of dollars, can be modeled by the function B(t) = 9.47t ^ 2 - 21.46t + 18.72 , where is the number of years since 2013. The function C(t) can be used to model the two companies' combined net income, in billions of dollars, where t is the number of years since 2013. Write the function c(t) .

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hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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answer: what is the question you're trying to ask?

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infinity is the answer