Answer:
From 2004 onwards, fewer than 38.1% of U.S. voters use punch cards or lever machines
Step-by-step explanation:
The percentage of U.S. voters who use punch cards or lever machines in national elections, in x years after 1994, is given by the following equation:
[tex]P(x) = -2.5x + 63.1[/tex]
In which years will fewer than 38.1% of U.S. voters use punch cards or lever machines?
In x years after 1994 onwards.
x is found when P(x) = 38.1.
So
[tex]P(x) = -2.5x + 63.1[/tex]
[tex]38.1 = -2.5x + 63.1[/tex]
[tex]2.5x = 25[/tex]
[tex]x = \frac{25}{2.5}[/tex]
[tex]x = 10[/tex]
From 2004 onwards, fewer than 38.1% of U.S. voters use punch cards or lever machines
