Sides of three square rooms measure 14 feet each, and sides of two square rooms measure 17 feet each. Which expression shows the total area of these five rooms?

3 (14²) + 2 (17²)

the area of each square room with 14 feet is 196

196 times 3 is 588

the area of each square room with 17 feet is 289

289 times 2 is 578

so the total is 1166