Julie opened a savings account at the bank. She opened her account with starting amount of 200 $. Every week after that, she deposits 30$ more. How is that non proportional.

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.