Dada a função f (x)=5x-1,calcule!? a)f(2) b)f(3) - f(1) c)A raiz de f d)O valor de x tal que f(x)=24

a -> 5 . 2 - 1 = 10 - 1 = 9

b -> (5 . 3 - 1) - (5 . 1 - 1) = (15 - 1) - (5-1) = 14 - 4 = 10

c -> 5x - 1 = 0 -> 5x = 1 -> x = 1/5

d -> 5x - 1 = 24 -> 5x = 24 + 1 -> x = 25/5 = 5

f(x) = 5x - 1

a)

f(2) = 5 * 2 - 1

f(2) = 9

b)

f(3) = 5 * 3 - 1

f(3) = 14

f(1) = 5 * 1 - 1

f(1) = 4

f(3) - f(1) = 14 - 4

f(3) - f(1) = 10

c)

5x - 1 = 0

5x = 1

x = 1/5

d)

f (x) = 24

24 = 5x - 1

5x - 1 = 24

5x = 24 + 1

5x = 25

x = 25 / 5

x = 5

a) f(2)=9

b) 14-4=10

c) 1/5

d) x=5