Me with these two 9th grade math questions!
1) what is the common ratio of the geometric sequence: -1/12,-1/2,-3,-
a) -1/6
b) -6
c) 1/6
d) 6
2) in the first hour of an experiment, the temperature of a liquid was 4.5°c. then the temperature was raised by 0.25°c every hour after that.
in what hour was the temperature of the liquid equal to 22.25°c?
a) hour 69
b) hour 70
c) hour 71
d) hour 72