An equation of the line that passes through the point (0,-1) and whose slope is 2 is? 1) y=2x-1
2) y= 2x+2
3) y= -x+2
4) y= -2x-1

Please show your work!

Asphere has a diameter of 10 in. what is the volume of the sphere?

Which of the following is the shape of a cross section of the figure shown below

Suppose that in 2008 , 840,800 citizens died of a certain disease assuming the population of teh country is 399 miliion, what is the mortality rate in units of deaths per 100,000 people?