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The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1