Describe how to determine a percent from a z-score table

Which expression is equivalent to 2x^2+7x+4?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8