Solve this equation
(21-15÷5)-(75÷5×2)

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

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Which expression is equivalent to 16 in exponential form? a) 4 × 4 b) 8 × 2 c) 23 d) 24