Paul uses the function y = 5x + 45 to model the situation. What score does the model predict for 3 h of homework? Explain or show your work!

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.

3. simplify. 312⋅312 4. rewrite n√xm using a rational expression.