Alot of points for those that understand this math and can help me with a few more :)!

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

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities