True or false and why csc^-1[csc(-pi/4)]=-pi/4

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41