Factor 20r+60t20r+60t20, r, plus, 60, t to identify the equivalent expressions. Choose 2 answers:
Choose 2 answers:

(Choice A)
A
4(5r+15t)4(5r+15t)4, left parenthesis, 5, r, plus, 15, t, right parenthesis

(Choice B)
B
5(5r+12)5(5r+12)5, left parenthesis, 5, r, plus, 12, right parenthesis

(Choice C)
C
60(20r+t)60(20r+t)60, left parenthesis, 20, r, plus, t, right parenthesis

(Choice D)
D
20(r+3t)20(r+3t)

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables