Kathleen lost a tooth today. now she has lost 4 more than her sister cara lost.
1. write an expression to represent the number of teeth cara has lost. let k represent the number of teeth kathleen lost.
2. write an expression to represent the number of teeth kathleen has lost. let c represent the number of teeth cara lost.
3. if cara lost 3 teeth, how many teeth has kathleen lost?

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

The tile along the edge of a triangular community pool needs to be replaced? ?