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Mathematics
Estrella Gibson
26 July, 12:10
Find f (-7) if f (x) = 2 х + 8.
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Lina
26 July, 13:56
0
use the substitution method
f (x) = 2x+8
f (-7) = 2 (-7) + 8
Mutiply first then add
Positive number times negative number = negative number
= - 14+8
f (-7) = - 6
Answer : f (-7) = - 6
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Izabella Espinoza
26 July, 15:13
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f (-7) = - 6
Step-by-step explanation:
Put x = - 7 to f (x) = 2x + 8:
f (-7) = 2 (-7) + 8 = - 14 + 8 = - 6
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