The picture shows a circle divided into 8cequal wedges which are rearanged. the radius of the circle is r and its circumfrence is 23.14r. how does the picture hel to explain why the area of the circle is 3.14 r2?

How many degrees does the hour hand move from 3: 00 to 5: 30?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)