4. The cost of purchasing songs from a particular online service can be found
by using the following equation:

c= 1.29d +5.50

where c represents the total cost and d
represents the number of songs
downloaded. If Quentin spent a total
of $14.53, how many songs did he
download?

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Which of the following tables represents exponential functions?