A certain book is sold in a paperback version for 4.75 or in a hardcover versoin for 11.50, If a copy of the book is being purchased for each of the twenty students in Mrs. Jacksons class, how much money would be saved by buying the paperback version as opposed to the hardcover version

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

What numbers are included in the set of integers? what numbers are not included?