Find the fourth roots of 81(cos320degrees + i sin 320degrees)

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

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25