The table shows the amounts of food collected by two homerooms. homeroom a collects 21 additional items of food. how many more items does homeroom b need to collect to have more items per student?

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Can someone pls ! pls answer all. no explanation needed..

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)