What is the correct ratio?

Sin 40= 28/w
Cos 40= w/28
Tan 40= w/28
Sin 40= w/28

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?

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.