A gourmet pizza café sells three sizes of pizza: small, medium and large. To buy all three sizes, it costs a total of 46.95. If a medium pizza cost $15.70 and a large pizza cost $17.55, how much does a small pizza cost? (answer in context, and no $ symbols)

What is the value of x when x + 7 = 21?

What is the slope of the line passing through the points (-5, 7) and (-3,5)?

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.