1,368 rounded to the nearest hundred​

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?