What is the change due if a $50 bill is tendered for a charge of $3.84?

Estimate each quotient. show the compatible numbers you use. 0.00438 ÷ 0.00072

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.

Anyone know these questions? i need ,.