B - line graph. A line graph should be added because he wants to know how many of available apartments there were during the time of the year and line graphs are usually up and down on the info.
Answer:

Step-by-step explanation:
Considering the expression

Solution Steps:

as

so


join 
so






so


so



Therefore

On dividing all the three ratios with 2 u can simplify it as
2:11:15
Hope it helps.
Dont forget to say thx if it helps
Y= arcsin(x) is equivalent to sin(y) = x
we know that -1≤x+1, hence the range of y is: -π/2≤y≤+π/2