If the price of peanut butter for peanut butter and jelly sandwiches increases, the supply for PB&J sandwiches will ?
I know the answer is decrease but can someone explain to me why it’s decrease instead of increase ?

decrease

Explanation:

It will decrease because when the price goes up it will make people not want to buy it because they used to be able to buy it for cheaper.  For example if a soda was $1.99 and they then raised the price to $3.00 would you want to buy it as much? No, probably not unless you were truly thirsty but even still if someone raised the price and there was a cheaper option you would go with the cheaper option because it's the same thing but differently priced. People tend to buy things when they are cheaper or on sale rather than at their original price and that's why some stores use pricing to trick you. They say something is on sale but in reality it costs just the same as the original price or sometimes more than that. They do this to compete and to get money out of you.

among other factors, composers started writing dynamic markings in their scores because "new instruments allowed for more dynamic ranges and contrast."

dynamics allude to the loudness or softness of music. dynamics offer an approach to demonstrate articulation in sheet music. they to drive the enthusiastic substance of music through volume and force. maybe you could alter both the volume and the shading profundity on your screen at the same time. we can likewise think about the force side of elements as the quality of a note. a few notes are intended to be played delicately and gently, while others are intended to be played all the more firmly.  

some dynamics markings have a letter 'm,' which remains for mezzo, signifying 'medium.' so a mezzo piano unique stamping resembles this (mp) and intends to play medium calm, while a mezzo specialty dynamic resembles this (mf) and intends to play medium loud.