A value in a sequence is 2 times the previous value, like this: {8,16,32,64}.
How would this sequence be represented as a recursive equation?

a. a1=8 and an=2a1
b. a1=8 and an=2n
c. a1=8 and an=a1+2n
d. a1=8 and an=2an−1

It takes evan 6 3/4 to mow 3 lawns. it takes 2 1/3 hours to mow me. gals lawn and 1 3/4 hot mow ms. lee’s lawn. how many hours does it take evan to mow the third lawn?

True or false? a circle could be circumscribed about the quadrilateral below.

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?