Don tracked the price of gas for several months. In January gas cost $2.65, in February the price had risen $0.56, in March decreased $0.23, in April risen $1.02, and in May decreased $0.48. By how many dollars has the price of gas changed from January to May?

Starting price is 2.65, increased by. 56

2.65+.56=3.21

Price is 3.21, decreased by. 23

3.21-.23=2.98

Price is 2.98, increased by 1.02

2.98+1.02 = 4

Price is 4, decreased by. 48

4-.48=3.52

Now find the difference from the starting price (January) from the end price (May)

3.52-2.65=.87

The difference from gas prices is $.87