The expression to represent this would be (m-18)/k.
We first subtract the 18 beads she used in her mother's bracelet from her beginning number, m. We then divide our result by k, the number of bracelets she made for her friends.
Y = -9x - 10 The dolphin is diving 9 feet per second so the rate of change is -9. It's also 10 feet below sea level which makes the y-intercept -10 Hope this helped!
