santiagoshanyra santiagoshanyra

04-01-2020
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 :

Tofunmi25 Tofunmi25

04-01-2020

Answer:

A. 17 , 11

f(4)=3(4) + 5

=17

f(x)= 38

38 = 3x + 5

38 - 5 = 3x

33 = 3x

x =11

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