Answer:
A . 60
Step-by-step explanation:
30 x 2 = 60
Answer:
13
Step-by-step explanation:
Multiply and then do the the same for pencils and notebooks
Answer:
It means that the number 7 is equal to 7, so the system of equetions when simplify with the statement shows is just the equality of the number.
Step-by-step explanation:
If you read it slow you will get it
Answer:
The correct answer is that a rose bush costs $10 and a shrub costs $4
Step-by-step explanation:
To solve this, start by writing equations for what each spent. Use x for the cost of a rose bush and y for the cost of a shrub. Below would be the equations for each.
Rob: 8x + 5y = 100
Amy: 8x + 8y = 112
Now to find the cost, we multiply Rob's equation by -1 and add them together. This will get x to cancel and allow us to solve for y.
-8x - 5y = -100
8x + 8y = 112
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3y = 12
y = 4
So we know the cost of a shrub is $4. Now we can plug that in to either of the original equations and solve for the rose bush cost.
8x + 5y = 100
8x + 5(4) = 100
8x + 20 = 100
8x = 80
x = 10
Which means that a rose bush costs $10.
