The formula for determining how long a hike will take is t=1/2(d+h) , where d is the distance in miles and h is the elevation gain in thousands of feet.

solve for h.

h=t−d/2

h=1/2 t−d

h=2d−t

h=2t−d

The 7th grade has collected $200 for a field trip that would cost $600. the teachers decided to ask $50 from additional students to cover the cost. how mny students must pay to cover the cost ? a 16studentsb 80studentsc 160studentsd 8students show work