miab5329 miab5329

08-12-2020
Mathematics

contestada

Given the function f(x) = 2x + 1, find x if f(x) = 15.

Respuesta :

beasyholli2 beasyholli2

08-12-2020

Answer:

x = 7

Step-by-step explanation:

15=2x+1

2x+1=15

2x+1−1=15−1

2x=14

2x /2 = 14 /2

x = 7

Answer Link

VectorFundament120 VectorFundament120

08-12-2020

Let y = f(x)

[tex]y = 2x + 1[/tex]

When y=15

[tex]15 = 2x + 1 \\ 2x = 15 - 1 \\ 2x = 14 \\ x = 7[/tex]

Therefore, x = 7 when f(x)=15

Answer Link

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