Multiplying polynomials​

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

Ialready asked this but i never got an answer. will give a high rating and perhaps brainliest. choose the linear inequality that describes the graph. the gray area represents the shaded region. y ≤ –4x – 2 y > –4x – 2 y ≥ –4x – 2 y < 4x – 2

Is there an x intercept in the equation 60*1.15^x