382 3/10 - 191 87/100= math difficulties answer this question

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

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Need asap. solve for the following inequality