Can someone who understands this help me?????? Thank you so much!!!!!!!!

Find f(-3)

Please someone help me I don't get it!!!!!!!!!!! *LOTS OF POINTS*

NO RANDOM ANSWERS PLEASE
I RLLY NEED UR HELP!!!!!!!

Can someone who understands this help me Thank you so muchFind f3Please someone help me I dont get it LOTS OF POINTSNO RANDOM ANSWERS PLEASEI RLLY NEED UR HELP class=