Out of the 3 points, only ABC are collinear. Hence, only ABC can be chosen. The chances of choosing ABC out of ABCD is 1/4. Hence, the probability is 25%.
At $0.10 to each and add together so 2.02+2.11+2.19+1.99+2.32=10.36 10.63/5 (number of supermarkets) =2.126 round to 2dp because money so answer =$2.13