Answer:
I think it is 21 squares
Step-by-step explanation:
Count the squares
Hope this helps

so it is 18 boxesan hour because 90÷5=18 and 18 is his team packing rate per hour
|sin(x)−sin(y)|=|2sin(x−y2)cos(x+y2)|≤|2sin(x−y2)|
Si me amp Jake I help u it’s Definitely