Question

Calcule a função dada, segundo seus valores: cada f(x)= 5x + 8 :
a) f(5)= b) f(6)= c) f(-7)=

Answer 1

$f(x)=5x+8\\a-f(5)\\ f(x)=5x+8\\ f(5)=5.5+8\\ f(5)=25+8\\ f(5)=33\\\\b- f(6)\\f(x)=5x+8\\f(6)=5.6+8\\f(6)=30+8\\f(6)=38\\\\c-f(-7)\\f(x)=5x+8\\f(-7)=5.(-7)+8\\f(-7)=-35+8\\f(-7)=-27$