The cost of one rose bush is $12 and cost of one geranium is $4.
Step-by-step explanation:
Let,
Cost of one rose = x
Cost of one geranium = y
According to given statement;
3x+12y=84 Eqn 1
8x+6y=120 Eqn 2
Multiplying Eqn 2 by 2

Subtracting Eqn 1 from Eqn 3

Dividing both sides by 13

Putting x=12 in Eqn 1

Dividing both sides by 12

The cost of one rose bush is $12 and cost of one geranium is $4.
Keywords: linear equation, subtraction
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