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Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

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?