The equation 270=f+9(20) represents the cost of the same school group going to a science museum, but only 20 students could go. Find the solution to the equation.

Which of the following is correct interpretation of the expression -4+13

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?