Write the expressions for (t + s)(x) and (t - s)(4) and evaluate (t·s) (x)

Question

s(x)=3x+3

t(x)=5x

Answer 1

s = 3x +3

t = 5x

(s+t)(x) = 8x+3

(t-s))(4)= 2(3)+3 = 9

(ts)(x) = (3x+3)(5x) = 15x^2 +15

t(s(x)) = 5(3x+3) = 15x+15

s(t(x)) = 3(5x)+3 = 15x+3