Answer: Experimental study
Step-by-step explanation:
This is an experimental study because it involves determination of the effect of each treatment on separate individuals. It involves selecting the 81 individuals randomly to be treated with a particular treatment (either of the two treatment). In experimental study the researcher apply separate treatments on a different groups and measure its effect on each of the groups.
Answer:A is a subset of D
Step-by-step explanation:
Because A has what it is contained D
Y = 4/5x + 30
4/5 because the slope is 4 up, 5 right. 30 is the y-int
