How does 15 go in a 16 go in c and 17 go in b this is due tomorrow

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

It says factor each expression 49x-28?

Given: m∠ adb = m∠cdb ad ≅ dc prove: m∠ bac = m∠bca lol