Write a piece-wise function for this situation.

Question

The post office offers flat-rate mailing of packages: P15.50 for a package weighing less than 4 oz, P22.50 for a package weighing 4 oz to less than 8 oz and P30.50 for a package weighing 8 oz to 12 oz. Write a piece-wise function for this situation.

Answer 1

Let x be the weight of the package. Then,

P15.50 if x<4 oz

P22.50 if 4<=x<8 oz

P30.50 if 8<=x<=12 oz