Question

considere a funçao f(x)=3x-5 calcule : 
a)f(5)
b)f(3)

Answer 1

f(x)=3x-5
a) f(5)= 3*(5)-5
f(5)= 15-5
f(5)= 10

b) f(3)=3*(3)-5
f(3)= 9-5
f(3)= 4