Answer:
2
Step-by-step explanation:
the column (x) the numbers go up by 4 every time and the (y) column goes up by 7 every time
21/4 :3/4= 21/4 *4/3= 7/1 *1/1 = 7
7 bookcases
Fraction: 1/4 Decimal: 0.25
She drove 4 minutes