You are going to use the cos trig function as you have the adjacent side and the hypotenuse.
Cos^-1(12/13)=angle x
22.62
The lowest common factor of 240 and 1500 ... and of any other group of numbers ... is ' 1 '.
Answer:
growth because 'b' > 1 b decay because 'b' is < 1
12.) she gets 70 because she sells 60 fiction and 20 non fiction and you add 60 to 10 because the things are half off
Looking at the purple area, we see that 1≤y≤3. So we can immediately reject answers (d), (a).
Since the purple area is to the right of and above the sloping line, we choose answer (c).
The correct answer to the whole problem is (c).