Question

Four pine seedling and 3 fir seedlings cost 29.00. Two pine seedlings and 7 fir seedlings cost $42.00 Determine the cost of each type of seedling.

Answer 1

4p + 3f = 29
2p + 7f = 42

Answer 2

Solve the system

Answer 3

I tried but I got a weird answer? Do you mind me writing what I did and tell me where I went wrong?

Answer 4

@Hero

Answer 5

I don't know where you went wrong because you haven't posted your work

Answer 6

I am, hold on.

Answer 7

4x+3y=29
2x+7y=42
___________

6x+10y=29

...

6x+10y=29
-6x -6x
10y=29-6x
/10 /10
y=2.9-0.6x

...

4x+3(2.9-0.6x)=29
4x+8.7+2.04=29

Have I done anything wrong so far?

Answer 8

@Hero

Answer 9

Who instructed you to add them together. You are not authorized to simply add them together.

Answer 10

Can you show me? I don't get the difference?

Answer 11

@Hero