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Luna Moreno
Mathematics
30 June, 19:15
If F (x) = 2x + 5 then f (x + 3) =
+1
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2
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Timothy Kirk
30 June, 19:26
0
Answer: 2x - 1
Step-by-step explanation:
Given;
F (x) = 2x + 5 ... *
we are to find F (x + 3)
The first thing we will do is to equate x and x + 3 but it is clear that x in not equal to x + 3, so we will write it as:
x = y + 3 and then make y the subject of the formula:
x = y + 3, that is
y = x - 3
This means that y (x) = f (x-3)
substitute x - 3 for x in the original expression given, that is
F (x+3) = 2 (x - 3) + 5
F (x + 3) = 2x - 6 + 5
F (x + 3) = 2x - 1
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Easton Cherry
30 June, 19:31
0
Answer: Fx+3F
Step-by-step explanation: you just use distributive property and multiply (f•x) + (F•3)
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