X = low-energy lamp
y = high-energy lamp
1) 4x + 5y
2) 120= 4x + 5y
Y = 4+3x
2x+1 = y
Rewrite as two systems of equations.
3x - y = -4
2x - y = -1
Now use the substitution method to find the point of intersection.
You can also graph both equations on the same xy-plane using your graphing calculator to find the desired point.
3 times 3 times 2 equals 18
The result of the expression in exponential form is 9^-4
<h3>Product of exponents</h3>
Given the expression below
According the product law, since the base are equal, we will add the exponent to have:
Hence the result of the expression in exponential form is 9^-4
Learn more on exponents here; brainly.com/question/11975096
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