Me with this one as well i have one more coming

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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.

Iam at home. /: i am playing video games. translate the following statement into symbolic form.