Match the width with the given area and length of a rectangle.
1=9.25 cm; a = 55.5 cm?
w
= 6.5 cm
1=5 cm; a = 44 cm?
w = 6 cm

1 = 5 cm; a = 31.25 cm?
w = 6.25 cm
1= 7.5 cm; a = 48.75 cm2
w
= 8.8 cm

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?