niyah1228
niyah1228
17-06-2019
Mathematics
contestada
If f(x) = 5x + 40, what is f(x) when x = -5?
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Аноним
Аноним
17-06-2019
use the substitution method
f(x)= 5x+40
f(-5)= 5(-5)+40
f(-5)= -25+40
f(-5)= 15
Answer is f(-5)= 15
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