A recipe calls for 245 sticks of butter. If you were to make half the recipe, how many sticks of butter would you need to use

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?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

|2x - 6| > 10 {x|x < -8 or x > 2} {x|x < -2 or x > 8} {x|-2 < x < 8}