Zoe is going to buy pizza and soda for 5 people + 1 person = <<5+1=6>>6 people.
For 6 sodas, Zoe will pay 6 sodas * $0.5/soda = $<<6*0.5=3>>3
For 6 slices of pizza, she will pay 6 slices * $1/slice = $<<6*1=6>>6
Adding the price of the soda and pizza, Zoe paid $3 + $6 = $<<3+6=9>>9
#### 9