Round 17 5/8 to the nearest whole number

How do you answer this question? (step by step)

The product of two negative rational numbers is always zero sometimes zero never zero

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.