On a trip, a student drove 40 miles per hour for
2 hours and then drove 30 miles per hour for
3 hours. what is the student's average rate of
speed, in miles per hour, for the whole trip?

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?