The percentage, P, of U. S. voters who use punch cards or lever machines in national elections can be modeled by the formula: P = −2.5x + 63.1 where x is the number of years after 1994. In which years will fewer than 38.1% of U. S. voters use punch cards or lever machines?

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:

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

From 2004 onwards, fewer than 38.1% of U.S. voters use punch cards or lever machines

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