A tow truck company in Houston charges a $40 service call fee and an additional fee of $15 per mile that the vehicle is towed. Write an equation in slope intercept form where c represents the total cost and m, represents the number of miles the vehicle is towed.

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?