Step-by-step explanation:

Multiple 6 with numbers inside paranthesis:
12x - 66 + 15 = 21
add 66 fhen substrack 15 from both sides :
12x = 72 divide both sides with 12:
x = 6
Question -
What is 3x+4(2-7x) what is the answer
Answer:
= −25x+8
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Answer:
you should probably charge around 15-20 dollars. personally i think you should charge 15 and see how many sales you get and as your demand increases, increase the price.
Answer: warmer to the cooler
Step-by-step explanation :Conduction is the movement of heat through a substance by the collision of molecules. ... The slower molecules gain more thermal energy and collide with other molecules in the cooler object.