Answer:
Amount needed by her 

Explanation:
Given: Susie wants to buy 5 slices of pizza and a litre of soda that cost $5 for her and her friends
To find: amount needed by her
Solution:
Let cost of 1 slice of pizza be 
 . Also, a litre of soda costs $5.
. Also, a litre of soda costs $5.
Cost of 5 slices of pizza 

Cost of a litre of soda 

Total amount needed by her 
