Trina's toy company charges $0.85 per pound to ship toys.

part a: write an equation to determine the total cost, c, to ship p pounds of toys. use your equation to determine the cost of shipping 2 pounds of toys.

part b: if the company reduces the cost to ship toys by 0.05 per pound, write an equation to determine the total cost, c, to ship p pounds of toys with the reduced cost.

i mainly don't understand part b- but i need explanation for part a still.

"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?