Let us assume the original cost of the earphones = x dollars
Then
x * (106/100) = 13.25
x = 13.25 * (100/106)
= 1325/106
= 12.50 dollars
So the actual cost of the earphones was $12.50. The correct option among all the options that are given in the question is the second option or option "B".
11/6-1/3 = 9/6 should be equivalent
A ) A function representing the amount of the dose that remains:

B ) Graph is in the attachment.
C ) f ( 10 ) = 10 * ( 0.95 ) ^10 = 10 * 0.5987 = 5.987 ≈ 6
Answer:
D ) f ( x ) = 10 ( 0.95 ) x; about 6 units.
Answer:
any idea about the length of the box
Glad you ask!!!
Part A: ok so... linear correlation between the number of hours of sunlight that a plant receives and the eight it grows. so its like the amount of sunlight.
Part B: The function that is the best fit is y=3x+4
Part C: The slope shows the plant and the intersection with the y axis
Hope this helps :)