96 is the correct answer to your question i
Simple! 1/3 times 3 equals 3/3, or 1.
4
x
+
y
−
2
z
=
0
4
x
+
y
-
2
z
=
0
,
2
x
−
3
y
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3
z
=
9
2
x
-
3
y
+
3
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=
9
,
−
6
x
−
2
y
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-
6
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0
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2
y
=
4
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2
y
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4
,
2
x
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4
y
=
8
2
x
+
4
y
=
8
3
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y
=
4
3
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+
y
=
4
,
6
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−
7
y
=
2
So for this problem, we will be using the exponential equation format, which is y = ab^x. The a variable is the initial value, and the b variable is the growth/decay.
Since our touchscreen starts off at a value of 1200, that will be our a variable.
Since the touchscreen is decaying in value by 25%, subtract 0.25 (25% in decimal form) from 1 to get 0.75. 0.75 is going to be your b variable.
In this case, time is our independent variable. Since we want to know the value 3 years from now, 3 is the x variable.
Using our info above, we can solve for y, which is the cost after x years.
In context, after 3 years the touchscreen will only be worth $506.
Answer:
3
Step-by-step explanation:
the perpendicular slope is the negative reciprocal.
-1 divided by -1/3 = 3