Divide each amount of napkins by the cost and that will get you the price for one napkin. You can use this to answer the other questions.
1. Mich forgot to subtract the 3x to the x in the numerator, and he forgot to simply 4 to 2
2. His numerator should be - 2
3. His denominator should be 2x
His final answer should be
-2/2x = -x
Answer:
Step-by-step explanation:
f(-9+h)= (-9+h)² = h²-18h+81
f(-9+h)-f(-9)=h²-18h+81 -81 because : f(-9) = (-9)² = 81
f(-9+h)-f(-9)=h²-18h
(f(-9+h)-f(-9))/h=(h²-18h)/h = h(h-18)/h =h-18
lim (f(-9+h)-f(-9))/h = lim(h-18= - 18
h→0 h→0
Answer:
D
Step-by-step explanation: