15 3/4 miles in 5 1\4 hours what was their average rate of speed in miles perhour

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

Change negative exponents to positive. then solve. round to four decimal places

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.