Question in attachment

Afurniture store has 1,500 chairs in storage. a manager uses three delivery receipts to simulate samples to check 100 chairs and note the number of brown chairs. suppose the actual number of brown chairs is 1,080. about how many brown chairs are

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much