Collision insurance with a $500 deductible costs $310 per year. With a $1,000 deductible, it costs $255 a year. The table shows the average cost of repairs for two types of accidents and the probability of each type. Choose the deductible that completes the sentence.
Collision insurance with a ___ has the least expected cost for one year.
What is the least expected cost for one year?
cost = $