Erika drove 280 miles in 5.5 hours. she averaged 40 miles per hour driving through towns and cities . she averaged 55 miles per hour driving on the highway. how many hours did erika drive on the highway?

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

h * s * a

h = history teacher

s = science teacher

a =   art teacher.

i see no data table, but just multiply the number of history teachers, science teachers, and art teachers.