Which expression will give the new price of a $15 item marked up by 28% a. 28+0.15 x 28 b. 28-0.15 x 28 c. 15+0.28 x 15 d. 15-0.28 x 15

the answer is

C

if i am wrong let me know

Step-by-step explanation:

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

b. x + 1

step-by-step explanation:

i'am smart