Today's temperature is expected to reach 13°C. Adrian uses the equation
117 = 5x – 160 to convert this
temperature to degrees Fahrenheit. Let
x represent the temperature in degrees
Fahrenheit. What is the temperature in
degrees Fahrenheit?
A. 13
B. 29.8
C. 36.4
D. 55.4

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)