A teacher is taking her students to a museum. · Each student pays $15.50 for entrance into the museum. · Each student pays an additional cost per mile to ride the bus to the museum and back to the school. · The trip is 75 miles one way. · The cost per student is round trip. If x represents the cost per mile, which expression shows how much each student will pay to visit the museum? 75x + 15.50 90.50x 15.75x + 75 150x + 15.50