DeAndre was known for having one of the worst free throw shooters of all time. But he has been working very hard to improve in the last few years. One particular year, after 20 games, his free throw percentage was 45%, but at the end of the season his free throw percentage was 82%. Was there necessarily a point during the season where his free throw percentage was exactly 75%?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?

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.