3{MCCORP.3c) Notebooks cost $1.20 each. This weekend they will be on sale for
$0.80. What percentage off of the original cost is the sale? *

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.