D
Step-by-step explanation:
you plug 4 in for x
f(4)=4^2+2(4)-3
=16+8-3
=24-3
=21
answer: i would say b
step-by-step explanation:
with the way the question is worded, i believe b is the answer
the cost of the apple depends on the weight
i would you but i don't under stand the qustion