ro92430 ro92430

23-02-2021
Mathematics

contestada

Given the function ƒ(x) = 3x + 5, find ƒ(4) and x such that ƒ(x) = 38.

Select one:
A. 17; 11
B. 20; 13
C. 12; 15
D. 24; 9

Respuesta :

abulubaba68 abulubaba68

23-02-2021

Answer: A.17;11

f(4)= 3(4) + 5

=12 + 5

=17

And, f(x)= 38

=>3x+5=38

=>3x= 38-5

=>3x=33

=>x = 33÷3

=>x = 11

So, A.17;11

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