How much of an alloy with 30% copper must be added to 25 pounds of a second alloy that is 20% copper to create a 27% alloy?

Let x pounds of 30% copper alloy should be added to 25 pounds of a second alloy that is 20% copper to create y pounds of a 27% alloy.

Therefore, we can frame two equations as:

Our next step is to solve this system of linear equations. We can use substitution method to solve this system.

Therefore, 58.33 pounds of 30% copper alloy must be added.

a) false; the points do not have to be in a straight line.

step-by-step explanation:

the points could be in the shape of a triangle

b is incorrect

c is incorrect because it is saying the immediately don't form one when they are capable of doing so

d is incorrect

a. -0.3 > -0.33