Math grade 9 , see the photo and solve plzzz i need it very fassttt plzz help

Sara needs to take a taxi to get to the movies the taxi charges $4.00 for the first mile and then $2.75 for each mile after that if the total charge is $20.50 then how far was sara’s taxi ride to the movie

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank