If the angle of incidence of a ray of light,
from air to water is 35º, find the
angle of refraction, given that the
refractive index of water is 1.33.

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?