Answer:
B.3125
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
area= length times width
1 times 10= 10 times 2= 20
2 times 10=20
20+20=40
Sorry it doesn’t let me press the attachment, therefore I can’t help
If

then by the product rule,

and by the chain rule,

which leaves us with

Alternatively, if you exclusively want to use the chain rule, you can carry out logarithmic differentiation:

By the chain rule, differentiating both sides with respect to <em>x</em> gives

Solve for <em>f'(x)</em> yields

just as before.
Answer:
it would be a 77% change from original price