First find the increase in rent by multiplying last year's rent by 30%: $1000 * .3 = $<<1000*.3=300>>300
Then find the food cost increase by multiplying last year's costs by 50%: $200 * .5 = $<<200*.5=100>>100
Then find the new car insurance price by multiplying last year's price by 3: $100 * 3 = $<<100*3=300>>300
Then subtract the cost of car insurance last year from this year's price to find the increase: $300 - $100 = $<<300-100=200>>200
Now find how much Jessica's monthly expenses increased by adding the increases in each of the three costs: $300 + $100 + $200 = $<<300+100+200=600>>600
Now multiply the increase per month by the number of months in a year to find the annual increase: $600/month * 12 months/year = $<<600*12=7200>>7200/year
#### 7200