Fraction with a denomnator

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

Ebert used to make $22 an hour, but got a 10% raise. how much more will he make in a 40 hour work week with raise?

Kelli swam upstream for some distance in a hour.she then swam downstream the same river for the same distance in only 6 minutes.if the river flows at 5km/hr, how fast can kelli swim in still water?