Another submarine's descent can be represented as y= -3100x , where y is the
elevation and x is time in hours. How long will it
take this submarine to make the descent?

Answer

Find out the how much money can be saved by buying a $1,000 television in New Hampshire .

To proof

As given

If Massachusetts has a sales tax of 6 percent and New Hampshire has no sales tax.

The cost of the telivision in New Hampshire = $1000

First find out the cost of telivision in  Massachusetts

6% is written in the decimal form

= 0.06

6% sales tax on the cost of television = 0.06 × 1000

                                                              = $60

Total price of the television in  Massachusetts = 1000 +60

                                                                          = $1060

Money saved = Television price in Massachusetts - Television price in New Hampshire

= 1060 - 1000

= $60

Therefore  $60 be the money saved  by buying  television in New Hampshire .

Option (C) is correct .

Hence proved