How many streetlights will the city have at the end of 52 weeks?

Question

A city currently has 170 streetlights. As part of an urban renewal program, the city council has decided to install 3 additional streetlights at the end of each week for the next year.

Answer 1

If you start with 170 lights and add 3 per week for 52 weeks (3×52), then the total would be the sum of 170 and 3×52.