Solve the system of linear equations by substitution.

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

More than 450450 students traveled to a state park for a field trip. the school allowed 66 students to travel by car, and the rest traveled on 1111 buses, each of which held the same number of students. if there were ss students in each bus, which inequality best represents this situation?