X( -x)=0 where x is a rational number

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Which graph represents the linear function below? y-3=1/2(x+2)