Which equals ( squared root 20 - squared root 3) ( squared root 20 + squared root 3)?

Cody worked 42.5 hours per week in july. this is 12.25 hours more per week than he worked in june.how many hours did cody work per week in june?

3. find the radius of circle p.4. find y.

Which conjunction is disjunction is equivalent to the given absolute value inequality? |x+2|< 18