Simplify completely x+ 12x + 35 / 3x+15

1.) x^2 + 21 / 3

2.) x^2 + 11 / 3

3.) x + 7 / 3

4.) x + 5 / 3

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?

The roof of a farm silo is the shape of a hemisphere and is made of sheet tin. if the diameter of the silo is 126.5 feet, how much sheet tin is needed to make the roof? (use π = 3.1416.)

5,678.321 what place value is the 1 in