Ashley bought 2 CD's for $15 each and a charger for 7.50. If she writes a check for $45.94, What is the sales tax rate?
1 answer:
You might be interested in
Answer:
A
Step-by-step explanation:
Joint variation is given by:
Where k is some constant.
We are given that y = 360 when x = 4 and z = 10. Therefore:
Solving for k:
Therefore, our equation is:
Then when x = 5 and z = 12:
The answer is A.