The mean of four numbers is 70. the mean increases to 80 when a fifth number is added. what is the fifth number?

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

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

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811