Write the equation in slope intercept form

What can you determine about the solutions of this system

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

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?