Stephen is reading a book for his history class. he is going to read 23 pages each day. if the book is 276 pages long, which equation could be used to determine the number of days, d, that it will take stephen to read the entire book?

a. 23d = 276
b. d - 23 = 276
c. 23 + d = 276
d. d ÷ 23 = 276

Identify whether the figure has plane symmetry, symmetry about an axis, or neither.

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?