Asecretary can type 12 pages per hour. there are a total of 152 pages to type. how many pages remain to be typed after 9 hours?

So, she can type 12 pages in 1 hour, how many would she type in 9 hours then?  let's check,



so in 9 hours, she has that typed that many pages, how many pages remain from the 152?  well 152 - p.

4x 20 is 80 but if ther machine is broken then there is none you have to redo the test

The answer is: m > -4