24belsem 24belsem
  • 16-11-2022
  • Mathematics
contestada

Let f(t) be the number of people, in millions, who own cellphones t years after 1990
Explain the meaning of the following statements.
a. f(10) = 100.3
b. f(a) = 20
c. f(20) = b
d. n = f(t)

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