The diameter of cold virus cell is about 3x10-9 meter, and the diameter of a streptoccus bacterium cell is about 9x10-7 meter. Which is greater and about how may times greater

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

Draw a scaled copy of the circle using a scale factor of 2

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.