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Answer:
LAST OPTION:
Step-by-step explanation:
For this exercise it is important to remember the Power of a power property, which states that:
The expression given in the exercise is:
Therefore, in order to simplify it, you must apply the Power of a power property explained before.
Then, you get the following expression:
As you can notice, the expression obtained matches with the expression provided in the last option.
Answer:
x = $3
y = $4
Step-by-step explanation:
We need to know the prices of gravel and peas. We can find the price by using equations and graphing them.
Let X be the price of the sand
Be and the price of pea gravel
In the first purchase we have:
In the second purchase we have
Both relations represent the equation of a line. In the graphic shown, these lines are drawn. In this case the interception between both lines represents the price of each product, and the solution of the problem. You can see that the lines intersect at point (3 4). This means that the price of each bag of sand is $ 3, and the price of a bag of pea gravel is $ 4.
