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What is the greatest common factor of 8 and 36

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

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost