Help?!?? which choice is equivalent to the expression below?

choice A  because

2^(8.24) = 2^(8 + 0.2 + 0.04) = (2^8) *(2^ (2/10)) * (2^ (4/100))

Step-by-step explanation:

we  have  the power:    2^(8.24) =  2^(8 + 0.2 + 0.04)

notice.

2^(8 + 0.2 + 0.04)=  (2^8) * (2^0.2) * (2^0.04)

2^(8 + 0.2 + 0.04) = (2^8) *(2^ (2/10)) * (2^ (4/100))

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99