Where are the problems that need to be solved?
She asked her friends, which does not represent a random sample.
She tried to show cause and effect without doing an experiment (which includes simple random sample, control group, treatment, etc).
So the answer is she did not use a random sample, and tried to show cause and effect with an observational study.
Well, is not a product, just a sum of three terms, so to simplify simply expand and combine them as constants,
3² + 3⁴ + 3⁷
9 + 81 + 2187
2277
Answer:
a. -.06
the y-intercept = 
Step-by-step explanation:
by plotting
on a graph, you can see it intercepts (0.4, -
)
u sed desmos to find this out
*see picture*
Answer:
3.16(i think)
Step-by-step explanation: