I need help with this problem:
Let f(t) be the number of people, in millions, who own cell phones t years after 1990. Eplain the meaning of the following statements.
a) f(a) = 20
I also need to show the work. Thank you
Let f(t) be the number of people, in millions, who own cell phones t years after 1990. Eplain the meaning of the following statements.
a) f(a) = 20
I also need to show the work. Thank you
-
"a" represents a number of years. When you plug in a, you get 20.
So, "a" years after 1900, 20 million people have cell phones.
So, "a" years after 1900, 20 million people have cell phones.