To make an equation of this question, you can go 7 x 3... 7 dollars every hour for 3 hours. You want to multiply 7 times 3 and find that she would make 21 dollars. Hope this helps!
Answer is on the attachment. Brainlist pls.
Step-by-step explanation:
Answer:
Total chairs = 18×22= 396
so no. of extra chairs need = 468-396 = 72
Now( 72/18) rows = 4 rows
Therefore 4 more rows are needed here
Hope it helps you