Which of the following equations describes the line shown below? check all that apply

If i have 20$ and i gave 5$ away how much i got

What is the period of the sinusoidal function ?

Aband wants to create a cd of their last concert. to creat the cds, the cost will be $350 advertisement fee plus $3 per cd.write an inequality that represents how many cds they can buy with a maximum of $1225.solve the inequality