In a particular country, railroad miles have been on the decline in the miles of roads in the highway system I’ve been increasing. The function Y equals -934.4 X +143, 213 represents the railroad miles, while the function Y equals 409.9 X +154, 619 models the number of highway models. For each function, X is the number of years after 1997

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?