In a chemical compound there are three parts zinc for every 16 parts copper by mass. a piece of the compound contains 320 g of copper. write and solve an equation to determine the amount of zinc in the chemical compound.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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.

Wrote and expression for the difference of p and 4