Math

In March 2014, a gas company had the rate schedule shown to the right for natural gas usage in single-family residences. (a) What is the charge for using 40 therms in a month? Monthly service charge $22.75 (b) What is the charge for using 250 therms in a month? Delivery charge First 50 therms (c) Develop a function that models the monthly charge C for x therms of gas. $0.91045/therm Over 50 therms (d) Graph the function found in part (c). Natural gas cost First 50 therms $0.3795/therm Over 50 therms $0.5292/therm (a) The charge for using 40 therms in a month is $ (Simplify your answer. Round to the nearest cent.) (b) The charge for using 250 therms in a month is $ (Simplify your answer. Round to the nearest cent.) if OSXs (c) C(x) = if x > (Simplify your answers.) (d) Choose the correct graph below. OD. O A. O B. O c. 300 300- 300- 300- 50- Charge (dollars) 150- Charge (dollars) Charge (dollars) O 150- Charge (dollars) 200 400 0 200 400 0 200 400 0 Usage (therms) 200 400 Usage (therms) Usage (therms) Usage (therms)