Am i black plz answer

This is different from the first one can someone me

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

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?