if one pen costs d dollars, what is the cost, in dollars, of 12 pens. write an algebraic expression to answer the question. how do I write this I put 12xd=d
basically you have said
12*d = d
12*d = 1*d
d is dollars so you have said that if I buy one it is the same total price as if I buy 12. That is not right!
1 pen will cost $d Cost=$d
2 pens will cost $d*2 = 2d dollars
3 pens will cost 3d dollars
--
12 pens will cost 12d dollars
n pens would cost nd dollars
I think the answer that your teacher wants is just
cost of 12 pens = 12d dollars
or just
Cost=12d dollars
basically you have said
12*d = d
12*d = 1*d
d is dollars so you have said that if I buy one it is the same total price as if I buy 12. That is not right!
1 pen will cost $d Cost=$d
2 pens will cost $d*2 = 2d dollars
3 pens will cost 3d dollars
--
12 pens will cost 12d dollars
n pens would cost nd dollars
I think the answer that your teacher wants is just
cost of 12 pens = 12d dollars
or just
Cost=12d dollars