Ok so my question says blank over 25 equals 68/100 i need to know what the blank equals

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.

Find the values of the variables in the kite

I’m really confused and need your assist me with this question i’ve never been taught