This answer would be 21 because you’d just do 15 increased by 40% which gave me 21
Answer:
Cost of the coat = $54
Step-by-step explanation:
Given:
She saved = $ 9
To Find:
Cost of the coat = ?
Solution:
Let the price of coat be x
She saved $9
and according to given condition it is 1/6 of the total money she needs for buying coat
by this we have

Multiplying both sides by 6

it becomes
x = 9*6
x = $54
As x is the amount she needs
so
Cost of the coat = $54
The answer is C: 6x^3 - 24x^2 + 9x + 30