this hotel lobby is being carpeted. each unit length represents one yard. carpet costs$22.50 per square yard. how much will it cost to carpet the room.

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.