Estimate 700+701.6+700.98+701.36 using clustering

Brent wants to know what is 5 x 1/2

5x−4≥12 or 12x+5≤−4 can you with this problem

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?