Help me please I need help

Which rational number could be graphed between -4 and -5

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?

What is the slope of the line? a. -5/2 b.2/5 c. 5/2 d.7/2