Enter the expression asin(x)+15, where asin(x) is the inverse sine function.

For a function to have an inverse function, it must be one-to-one, that is, it must pass the Horizontal Line Test that establishes that a function has an inverse function if and only if no horizontal line intersects the graph of at more than one point. The function asin(x) does not pass the test because different values of yield the same

However, if you restrict the domain to the interval:



as shown in Figure 1, then you have the inverse of the sine function.  

So in Figure 2 is shown the graph of:

.

Note that this graph is the same as:



but it is shifted 15 units upward

The answer is c. 7 (i think) i’m almost sure though