The Cost of Sending an Overnight Package from Los Angeles

Multiple Choice

The cost of sending an overnight package from Los Angeles to Miami is $25.00 for a package weighing up to but not including 1 pound and $3.50 for each additional pound or portion of a pound.Use the greatest integer function to create a model for the cost C of overnight delivery of a package weighing x pounds,x > 0. ​

A) ​C = 25.00 - 3.50[[x]],x > 0
B) ​C = 25.00 + 3.50[[x]],x > 0
C) ​C = -25.00 + 3.50[[x]],x > 0
D) ​С = -25.00 - 3.50 [[x]],x > 0
E) ​C = 25.00[[x]] + 3.50,x > 0