Verified answer

F(2) = - 2x + 5

F(2) = - 2 . (2) + 5

F(2) = - 4 + 5

F(2) = 1

F(1/4) = - 2.1/4 + 5

F(1/4) = - 2/4 + 5

F(1/4) = - 1/2 + 5

F(1/4) = - 1 + 10 / 2

F(1/4) = 9/2

F(1/4) = 4,5

F(2) + F(1/4) = 1 + 9/2 = 2 + 9 / 2 = 11/2 (na forma de fração)

F(2) + F(1/4) = 1 + 4,5 = 5,5 (na forma de número decimal)

f(x) = -2x + 5

f(2) = -2(2) + 5

f(2) = -4 + 5

f(2) = 1

f(1/4) = -2(1/4) + 5

f(1/4) = -2/4 + 5

f(1/4) = -1/2 + 5

f(1/4) = 9/2

f(2) + f(1/4) = 1 + 9/2

f(2) + f(1/4) = 11/2

R.: 11/2

-2*2+5-2(1/4)+5=

-4+5-1/2+5=

(-8+10-1+10)/2=

(20-9)/2=11/2

Oie! Dá 5,5

Bjo