Julio is selecting a random sample of people to survey for a newspaper article. Which elements are important for Julio to consider when choosing a random sample? Select three options. the size of the population
the size of the sample
the characteristics and demographics of the population
the probable responses to the survey questions from the population
the probable responses to the survey questions from the sample

?

Step-by-step explanation:

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given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation:

the answer is  

a.

4,624π mm2

step-by-step explanation: