What the answer and please give explanation!

Lois and clark own a company that sells wagons. the amount they pay each of their sales employees (in dollars) is given by the expression 12h+30w12h+30w where hh is the number of hours worked and ww is the number of wagons sold.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Determine the solution for mc001-1.jpeg