You buy a new cell phone for $79.99. the sales tax on the phone is 7%. what is the total cost for the cell phone?

Does the point (1, sqrt 7) lie on circle shown.

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?

Arectangle plot measure 20ft. by 30ft. a 3-ft.-wide sidewalk surrounds it.find the area of the sidewalk.