Mr. Jones is shopping for new appliances at a store. All appliances are on sale for 10% off.
Sales tax is 7%.
Which expression could Mr. Jones use to calculate the total cost of any
appliance, x?

HINT: Find the cost of the item if the original price is $100. Then Let x=100 and see which choice will give you the correct price.

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.