Nova receives a bill for her cell phone each month. she pays a flat fee of $35 35 plus $0.05 0 05 per text message. this month, her bill without taxes was $51.50 51 50 . which equation gives the number of text messages, t t , she sent this month?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?