Advd costs twice as much as a music cd. jack buys 2 dvds and 2 cds and spends $45. determine how much one cd costs, in dollars. [only an alegbraic solution can receive full credit]

The arctic is a cold deset biome, which one of the answers is not correct? a) animals in cold deserts burrow to get out of the harsh climates. b) vegetation in cold deserts is normally shallow rooted small shrubs. c) animals in cold deserts hibernate most of the year to get out of the cold. d) soils are very heavy and course. e) the region receives less than 10 inches of precipitation annually.