Answer: no the expression you would need to use
is 30 - 23 which equals 7 degrees
Step-by-step explanation: math
Let
be the amount of the 30% alloy and
the amount of the 60% alloy the metalworker will use. However much is used, the final alloy will have a mass of

kilograms. For each kg of the 30% alloy used, 0.3 kg is copper; similary, each kg of the 60% alloy contributes 0.6 kg, so that

Now,






Answer:
a or c Im not sure
Step-by-step explanation:
I think b though
1500.56 x 12 = 18006.72 per year
18006.72 x 30 = 540201.60
540201.60-350000 = 190201.60