Select the correct answer.
Identify the correct form of the following geometric sequence.

10 , 30 , 90 , 270 , ...

A.
f(x) = 3x + 10
B.
f(x) = 10(3x - 1)
C.
f(x) = 3x + 10
D.
f(x) = 3(10x)

What is the measure of ac? 5 units 13 units 26 units 39 units

Which one is the correct answer, and why?

"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?