Answer:
The most amount she could have charged for each bracelet is:
$ 7
Explanation:
It is given that:
Lana earned $49 on Friday $42 on Saturday,and $21 on Sunday selling bracelets.
Also, she sold each bracelet for the same price.
This means that if the maximum cost of each bracelet will be the greatest common divisor i.e. G.C.D. of the amount she earned each day.
which is G.C.D(49,42,21)=7
Hence, the answer is: $ 7