Write a mathematical equation for the total amount of money invested

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

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

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?