The teacher said estimate this with out counting 1 by 1 then divide it by 20 pleassee

Which function is represented by the graph

If myesha works overtime, she gets paid "time and a half" for every hour she works. in other words, for every hour over 40 hours myesha works each week, she gets her hourly pay plus half her hourly pay. what is myesha's pay per hour when she works overtime?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?