Which of the following equations are equations of circles? choose all that apply. (x+5)* +(y + 2+ = -4 2x +y+15% - y+3=0 x +y+2x+10v-5=0 3x + 3y1 + 12x + 307 - = 0 x2 - ya + 20x +2y +9=0

What is the volume of the sphere shown below with a radius of 3?

What is the interquartile range of this day at set?

Suppose that prices of a gallon of milk at various stores in one town have a mean of $3.71 with a standard deviation of $0.10. using chebyshev's theorem, what is the minimum percentage of stores that sell a gallon of milk for between $3.41 and $4.01? round your answer to one decimal place.