How many bricks 25cm long should be used to place along the bottom of a 2500 CM wall

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

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.

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?