Round 490,618 to the nearest hundred

The length of an intercepted arc of a central angle of a circle is 4 cm. if the radius of the circle is 5 cm what is the measurement of the central angle to the nearest whole degree

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation

Brent paid for 6 avocados with a $20.00 bill. he received $10.40 in change. construct and solve an equation can be used to find the price , of each avocados