6th grade algebra 2 questions no explanation needed

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?

Write the equations in logarithmic form 10^3=1,000

What is the benefit of converting measures in a ratio to the same unit