Tyler painted a wall with a length of 28 feet and width of 12 feet in 5 1/2 hours.what is the speed ,in square feet per hour ,at which tyler painted the wall ?

Hi, this is the official Tyler.
so
therefor this is an official answer

square feet per hour or can be notated as
(ft^2)/h
we have the h
now we need square feet
squaer feet of rectangle is legnth times width
legth=28
width=12
legnth times width=28 times 12=336 ft^2

so now we do
336/5 and 1/2
convert 5 and 1/2 to improper fraction
5 and 1/2=11/2
336/(11/2)
simplify the botom number to make it 1
multiply it by 2/11
but wait, we must multiply the top and bottom by 2/11 to keep the fraction equal to itself
(2/11)/(2/11) times 336/(11/2)=(672/11)/(22/22)=(672/11)/1=61 and 1/11 square feet per hour

answer is 61 and 1/11 ft^2/h
THATS RIGHT GUIES, I PAINT AT 61 AND 1/11 ft^2 PER HOUR

.12×10^5

... i got this by taking the first number 8 and then counting the places behind the 8 which would be 5 so than you move the decimal place by 5 so you get 8.12 then you show theirs 5 places behind the 8 by adding the 10^5 so you get 8.12×105