Plz help I dont know

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.