Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Karen wanted to go out to get some fast food. She pulls up to the drive-through and orders a 5-dollar burger. Her son then yelled out that he wanted a 4-dollar sandwich, so it was added to the order. Karen then decided to order some drinks and opted for two 4-dollar smoothies. What is the total cost of Karen's fast-food order?

### Response:
 Sandwich ya mwanae yenye thamani ya dola 4 inaongezwa kwenye burger ya Karen yenye thamani ya dola 5, jumla ni dola 4 + dola 5 = <<4+5=9>>9.
Karen anaamua kununua smoothie zenye thamani ya dola 4 kila moja, jumla ni dola 4 x 2 = dola 8.
Jumla ya agizo hili ni dola 9 + dola 8 = <<9+8=17>>17.