Briana monitors the number of E. coli infections reported in a certain neighborhood in a given week. The recent numbers are shown in this table:

Week 0=40 people

Week 1=60 people

Week 2=90 people

Week 3=135 people

According to her reports, the reported infections are growing at a rate of 50%.

If the number of infections continues to grow exponentially, what will the number of infections be in week 6?