Answer:
t:

meaning any number can substitute t and it would be the same answer.
Jamal-3 x 3 = 9 x 4 = 36
Andy- 4 x 2 = 8 x 5 = 45
Andy's surface area is bigger.
638-243 = 395 miles
rounding up, it would be 400 miles
To get the inverse, first off do a quick switch on the variables, and then solve for "y".
By doing so, they provide the illusion that the payments are cheaper then 1000 dollars, because 50 looks very small, when in reality it's $100 more then what the mattress is actually worth.