Eight times a number equals the number increased by 504. find the number.

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

Which diagram shows lines that must be parallel lines cut by transversal?

Solve the system of equations. 2x-2y=-4 and x+y=8. show work