contestada

Let the function f be defined by f (x) = 5x - 2a,
where a is a constant. If f (10) + f (5) = 55, what
is the value of a ?
(A) -5
(B) 0
(C) 5
(D) 10
(E) 20

Respuesta :

Medunno13

Answer: 5

Step-by-step explanation:

[tex]f(10)=50-2a\\\\f(5)=25-2a\\ \\ f(10)+f(5)=75-4a=55 \implies a=5[/tex]

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