If a car is traveling at a constant speed of 90 kilometers per hour (km/h), how many hours will it take for the car to travel a distance of 380 kilometers?

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

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1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25