Maria is adding a shelf to her bookcase. The piece of wood she has for her shelf is 30 1/2 inches long . The other shelves are each 27 1/4 inches long. How much longer is the piece of wood than the other shelves

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.

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12