Astore purchased a dvd for $12.00 and sold it to a customer for 50% more than the purchase price. the customer was charged a 7% tax when the dvd was sold. what was the customer's total cost for the dvd?

a.$18.84

b.$19.26

c.$12.84

d.$18.42

B-$19.26

Step-by-step explanation:

You multiply 12 by 1.5 to get 18 dollars. Then you multiply that by tax. 18 multiplied by 1.07 is 19.26 dollars. This is the final cost.

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.