Answer:
B
Step-by-step explanation:
the one on the tight becasue try plugging in zero
By the product rule,

By the power and chain rules,

When
, the first and last term vanish, and we're left with

Yes there is a solution. but
Answer:
He payed $643.50 for the bike
Step-by-step explanation:
Because $585 + 10% = $643.50
(Sorry if wrong!)
The last one
Hope this helps