A cell phone carrier charges a fixed monthly fee plus a constant rate for each minute used. Part 1: In January, the total cost for 325 minutes was $ 77.5 while in February, the total cost for 400 minutes was $ 85 . The constant charge for each minute used is:

A) 0.12
B) 0.11
C) 0.1

Part 2. The fixed monthly fee charged by the carrier is;

fee = $

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

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)

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.