The microsphere nanoscope is a powerful tool that allows humans to see structures 9 × 10–9 meter in diameter. How is this number expressed in standard form?

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

What are the solutions to the equation 4x2+3x=24-x

The radius of the circle below intersects the unit circle at (3/5,4/5). what is the approximate value of theta? 0.6 radians 1.0 radians 36.9 degrees 53.1 degrees