Question

dadas as funções, f(x) = 2x + 12, g(x) = -2x + 5, h(x) = 3x + 1 e p(x) = - 4x + 11, calcule: b) f(-5)
c) g(10)
d) f(-1) + g(2)
e) h(8)
f) g(4) + h(-1)
g) g(3) + p(-5)
h) f(2)

Answer 1

b) 2×(-5)+12
-10+12
=2
c) -2+10+5
-20+5
= -15
d) 2×(-1)+12+(-2)×2+5
-2+12-4+5
10-4+5
=11
e) 3×8+1
24+1
=24
f) -2×4+5+3×(-1)+1
-8+5-3+1
4-2
=2
g) -2×3+5+(-4)×(-5)+11
-6+5+20+11
-1+31
=30