Also need help on this, i promise this is the last one ^^"

What is the difference between regular convex and concave polygons

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?

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.