Let f(x) = - 4x + 5. Find and simplify f(3a-4).
f(3a-4)=
(Simplify your answer.)

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Write the product as a trinomial. (x + 2)(x + 3) x2 + 5x + 6 x2 + 6x + 6 x2 + 6x + 5 x2 + 5

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.