Question

se f(x)=2x-1entao o valor de f(2)+f(5) e :

Answer 1

f(2)=2.2-1=3
f(5)=2.5-1=9
3+9=12

Answer 2

f(x) = 2x - 1

x = 2
f(2) = 2.2 - 1
f(2) = 4 - 1
f(2) = 3

x = 5
f(5) = 2.5 - 1
f(5) = 10 - 1
f(5) = 9

f(2) + f(5) = 3 + 9 = 12
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Resp.: f(2) + f(5) = 12