Can anyone help with math models?? Please…?

Answer:
30: C
31: B
Step-by-step explanation:
30: If the width of the vegetable garden is 1/4 of it's length, we have to divide the length of the garden (12 feet) by 4 and we get 3 feet.
31: We just need to multiply 16 by 3/4 and we get 12.