The following frequency histogram represents the dollar amount each state and the District of Columbia gets back in federal highway and mass transit grants for each dollar of gasoline tax that their...

The following frequency histogram represents the dollar amount each state and the District of

Columbia gets back in federal highway and mass transit grants for each dollar of gasoline tax that their motorists pay into the federal highway trust fund, based on data obtained from the Federal Highway Administration.(a) Determine the class width.(b) Identify the classes.(c) Which class has the highest frequency?