Volume is length times width times height so the closet's volume is 3x3x7 which equals 63 cubic feet.
Because 63 is less than 67, she can not fix 67 boxes in her closet.
Tan B=1.33. If you put tan^-1 and find the angle of A, you’ll get 36.87, so 90-36.87=53.13, then put Tan53.13, you’ll get TanB=1.33
one expression using a variable for the unknown is... x = (3)(6/4)
Associative is your answer
-400 calculated it its right