What inequality does this number line show?
0
+ +
4 5
1
2
3

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

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?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)