Apair of headphones are 35% if they were originally priced at $13.40 how much is the sale or ice? ( idk and i need ! )

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.