Which of the following exponential functions has a horizontal asymptote at y = –2 ? f (x) = 2(–x + 2)

f (x) = 2(–x – 2)

f (x) = –2x + 2 correct

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

How is working backward similar to solving an equation?