Ben can address the weekly newsletters in 4 hours, Charlie can address them in 3 hours. How long would it take them to address the newsletters if they work together?

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

When you answer this can you explain

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary