Frank also has an eraser. It has a mass of 3g, and volume of 1cm3.what is it’s density

Solve: 3x+y=6 4x-2y=18 show all work !

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Pls never taught i’m really confused and i rlly need