When is the algebraic expression for subtract y from five

Acourgette seed and a pumpkin seed is planted p(courgette seed germinates) 4/5 and p(pumpkin seed germinates) = 1/6 what is the probability that both seds germinate

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.