C) In preparation for a picnic, Kelly made a salad with 1/10 of a bag of iceberg lettuce and
7/10 of a bag of Romaine lettuce. How many bags of lettuce did Kelly use in all?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?