The answer is 21.
Hope this helps. Have a nice day.
Answer:
a= k/9b+4
Step-by-step explanation:
https://www.mathpapa.com/algebra-calculator.html?q=K%3D4a%2B9ab
She used 2/4 pou.ds of cheese, or 8 ounces, or just a half-pound.
[deleted due to wrong answer]